If the annual real interest rate on a 10-year inflation-protected bond equals 2.7 percent and the annual nominal rate of return on a 10-year bond without inflation protection is 4.2 percent, what average rate of inflation over the ten years would make holders of inflation-protected bonds and holders of bonds without inflation protection equally well off?Select one:a. 2.7 percentb. 1.5 percentc. 5.7 percentd. 4.2 percent