illus the average interest rate + B. the interest rate on a long-term bond plus the average interest rate o C. the average interest rate on future short-term bonds. D. the standard deviation of the interest rate on long-term bonds. 9. Inflation affects money by L5 A. increasing money's efficiency as a medium of exchange. B. limiting money's role as a store of value. C. reducing the supply of money. D. reducing transactions and search costs. 10. After amortizing the principal, a debt security that makes the sam A. coupon bond. 23 B. discount bond