ASAP please need the answer and explanation

Please give an explanation to support your answer given to Question 12 above. Your answer should be in bullet points and the total number of words should not exceed 250 words. [Concise answer is expected, i.e. the shorter, the better]

The following two paragraphs are extracted from the judgment given by Lord Templeman in Harvela Investments Ltd. & Others v Royal Trust Company of Canada (C.I.) Ltd. & Others. Please answer Question 8 to 13 based on these two paragraphs and your legal knowledge. My Lords, by telex messages (the invitation) dispatched on 15 September 1981 the respondent vendors, Royal Trust Co of Canada (CI) Ltd, invited the appellant, Harvela Investments Ltd (Harvela), and Sir Leonard Outerbridge (Sir Leonard), to make offers to purchase the vendors shares in A Harvey & Co Ltd (the shares). The invitation stipulated that offers must be made by sealed tender or confidential telex which would not be divulged by the vendors before the invitation expired at 3 pm on 16 September 1981 when the vendors would accept 'the highest offer!. Completion of the purchase was to take place within 30 days of 16 September 1981 in Canadian dollars." Harvela offered $2,175,000. Sir Leonard offered $2,100,000 'or C$101,000 in excess of any other offer which you may receive which is expressed as a fixed monetary amount, whichever is the higher. Harvela claim the shares at the price of $2,175,000. Sir Leonard claims the shares at the price of $2,276,000 as a result of his referential offer of $101,000 more than Harvela's fixed offer. Peter Gibson J found in favour of Harvela (see [1984] 2 All ER 65, [1985] Ch 103). The Court of Appeal (Waller, Oliver and Purchas LJJ) found in favour of Sir Leonard (see [1985] 1 All ER 263, [1985] Ch 103). This appeal is brought by Harvela with the leave of your Lordships' House. 12. The vendor in this case was conducting the sale by: (4 marks) 1 A. Auction because it must be the intention of the vendor to get the highest price. By allowing a bidder to offer a referential bid, i.e. an additional amount above the offer of other bidders, the seller can get the highest price at the end. B. Fixed bidding as construed from the provisions in the telex messages of Royal Trust. C. Auction or fixed bidding as chosen by bidder, i.e. it is open to be chosen by the bidder whether they seek to buy the share by offering a fixed bidding or by a bid in an auction of the shares; and the vendor, i.e. Royal Trust shall treat each offer separately according to individual bidder's choice. D. None of the above is correct