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Let X be a random variable representing the present value of the benefits of a whole of life assurance, and y be a random variable representing the present value of the benefits of a temporary assurance with a term of n years. Both assurances have a sum assured of 1 payable at the end of the year of death and were issued to the same life aged *. Describe the benefts provided by the contract which has a present value represented by the random variable X-Y. G) Show that: cov[ X.Y]=240-AAC and hence or otherwise that var (x-Y)= ? ,-(4)2-22 where the functions A are determined using an interest rate of i, and functions ?A are determined using an interest rate of +27. 17] Total 8)