QUESTION 4 (25 MARKS) (UNIT 5) a) Illustrates an interest rate swap with example and diagram. (15 marks) b) Assume a currency swap in which two counterparties of comparable credit risk each borrow at the best rate available, yet the nominal rate of one counterparty is higher than the other. After the initial principal exchange, the counterparty that is required to make interest payments at the higher nominal rate at a financial disadvantage to the other in the swap agreement, comments on this statement. (10 marks)