Problem 11 (two points) Define the following: (a) What is reinvestment risk? (b) How do purchasers of bonds protect themselves from this risk? Problem 12 (two points) What is the CURRENT YIELD on a 9%, 10-year, $1,000 bond with a current price of $875? Problem 13 (two points) What is the price of 7%, 5-year, $1,000 bond with semi-annual coupons if the (a) YTM is 12% (b) YTM is 6% I Problem 14 (one point) How many years will it take for your investment to double if the interest rate is (a) 6% (b) 12% and (c) 3%