QUESTION 7 You are getting ready to buy a Walmart corporate bond with 10 years left to maturity. Which US Treasury security will you use as the "benchmark" when calculating the yield, price, and credit spread you will pay? 1. UST with a 0.25% coupon maturing 9/30/25 2. UST with a 0.625% coupon maturing 8/15/30 3. UST with a 1.375% coupon maturing 8/15/50 4. UST with a 0.125% coupon maturing 9/30/22