plz answer according to the value given in the question

4. Oxford Breeze School is gearing up to start their new session. Just like other grammar schools, they too provide goodie bags to their students. To source the bags, they have asked for quotations from their long-term supplier. The supplier's quote has given below: Price No. of Goodies 800 $8 801 - 1200 $7 1200+ S6 The school operates 250 days per year. Daily usage rate is 35 goodies and ordering costs are $50. Carrying costs is $2. a) Determine an order quantity that will minimize the Total Cost. (3 marks) b) Figure out the Number of orders. (1 mark) c) If lead time is 10 days, at what point should the company re-order? (1 mark)