Zero-Coupon Bonds Issued in 1999 Are Due in 2009

Multiple Choice

Zero-coupon bonds issued in 1999 are due in 2009.If they are sold at 55 percent of face value,the implied yield to maturity is (round the final percentage answer to 2 decimal places) :

A) 5.50%.
B) 6.16%.
C) 8.31%.
D) cannot be determined, need more information.