Interest Rates the Wall Street Journal Reports That the Current

Interest rates The Wall Street Journal reports that the current rate on 10-year Treasury bonds is 6.75 percent, on 20-year Treasury bonds is 7.25 percent, and on a 20-year corporate bond is 8.50 percent. Assume that the maturity risk premium is zero. If the default risk premium and liquidity risk premium on a 10-year corporate bond is the same as that on the 20-year corporate bond, what is the current rate on a 10-year corporate bond.

A) 7.50%
B) 8.00%
C) 8.50%
D) 8.75%