Tucker Corporation Is Planning to Issue New 20-Year Bonds

Tucker Corporation is planning to issue new 20-year bonds.The current plan is to make the bonds non-callable,but this may be changed.If the bonds are made callable after 5 years at a 5% call premium,how would this affect their required rate of return?

A) Because of the call premium,the required rate of return would decline.
B) There is no reason to expect a change in the required rate of return.
C) The required rate of return would decline because the bond would then be less risky to a bondholder.
D) The required rate of return would increase because the bond would then be more risky to a bondholder.
E) It is impossible to say without more information.