GM has just issued a callable, $1000 par value, five year, 5% coupon bond with semiannual coupon payments. The bond can be called at par in two years, or anytime after on a coupon payment date. If the bond is currently trading for $950, then its yield to call is closest to:

A. 3.9%

B. 6.2%

C. 6.8%

D. 7.7%