McGriff Motors has bonds outstanding which will mature in 12 years. the bonds pay a 12 percent semiannual coupon and have a face value of $1,000. the bond currently have a yield to maturiry pf 10%. the bonds are callable in 8 years and have a call price of $1,050. what are the bonds' yield to call?

a. 8.89%

b 10%

c 12%

d 9.89%

e 9.94%