Assume that a bond will make payments every six months as shown on the following timeline (using six-month periods): The timeline starts at Period 0 and ends at Period 40. The timeline shows a cash flow of $ 20.39 each from Period 1 to Period 39. In Period 40, the cash flow is $ 20.39 plus $ 1,000. Period0123940 Cash Flows$20.39$20.39$20.39$20.39+$1,000 a. What is the maturity of the bond (in years)? b. What is the coupon rate (as a percentage)?