in 2022, a customer buys 1 ge 10%, $1,000 par debenture, m '47, at 120. the interest payment dates are jan 1st and jul 1st. the bond is callable in 3 years at an 8% call premium. the yield to call on the bond is: a 5.26% b 8.00% c 8.37% d 10.23%