An investor buys a n- year bond for a price of P. The bond pays semiannual coupons and the yield rate for the bond is a nominal rate of 6% compounded semiannually. The book value of the bond immediately after the 9^th coupon is paid is $890. The book value of the bond immediately after the 10^th coupon is paid is $900. Find P. A) 800 B) 812 C) 820 D) 830 E) 841