Which Statement Regarding Bonds Is True

Which statement regarding bonds is true?

A) If a coupon bond is selling at par, its current yield equals its yield to maturity.
B) If rates fall after its issue, a zero coupon bond could trade at a price above its par value.
C) If rates fall rapidly, a zero coupon bond's expected appreciation could become negative.
D) If a firm moves from a position of strength toward financial distress, its bonds' yield to maturity would probably decline.