Which Statement Regarding Bonds Is True

Which statement regarding bonds is true?

A) If a 10-year, $1,000 par, 10% coupon bond were issued at par, and if interest rates then dropped to the point where r_d = YTM = 5%, we could be sure that the bond would sell at a premium above its $1,000 par value.
B) Other things held constant, a corporation would rather issue noncallable bonds than callable bonds.
C) Other things held constant, a callable bond would have a lower required rate of return than a noncallable bond.
D) Reinvestment rate risk is worse from an investor's standpoint than interest rate price risk if the investor has a short investment time horizon.