How to calculate it?

1) Galt Industries has just issued a callable, $1000 par value, five-year, 6% coupon bond with semiannual coupon payments. The bond can be called at par in three years or anytime thereafter on a coupon payment date. If the bond is currently trading for S978.94, then it's yield to maturity is closest to: A) 3.4% B) 6.0% C) 65% D) 6.8% Answer C