A bond has a par value of $1000, a time to maturity of 20 years, a coupon rate of 10 percent with interest paid annually, a current price of $ 850, and a yield to maturity (YTM) of 12 percent. If the interest payments are reinvested at 10 percent, the realized compounded yield on this bond is:（）
A. 10.00%.
B. 12.0%.
C. 10.9%.
