Sadik Inc.'s bonds currently sell for $1,334.00 and have a par value of $1000. They pay a $105.00 annual coupon and have a 12-year maturity, but they can be called in 8 years at $1,159.00. What is their yield to call (YTC)?

a). 7.16%

b). 6.24%

c). 6.57%

d) 6.90%

e). 5.13%