A firm's bonds have a maturity of 10 years with a $1,000 face value, have an 8% annual coupon, are callable in 5 years at $1,050, and currently sell at a price of $1,100. What are their nominal yield to call (YTC)? OA) 6.59% B) 6.68% OC) 6.76% OD) 6.47% OE) 8%