please help

QUESTION 16 A corporate note promises to make the following payments: 1 year from today it will pay $15,000 and 5 years from today it will pay $10,000 What is this note's Macaulay Duration if the appropriate discount rate is 8% None of the answers here. 3.10 5 2.89 QUESTION 17 Bond A is priced at $100.00, has a 8% coupon rate and 2 years to maturity, Bond B is priced at $101.886, has a 5% coupon rate and 2 years to maturity Bond C is priced at $97.327, has a 5% coupon rate and 3 years to maturity of the three bonds, which bond will likely experience the smallest percent change in price if the market discount rates for all three bonds increased by 100 basis points? A Bond A B. Bond B C. Bond C D. None of the above