which of the following is not true?
(a) given time to maturity, the duration of a zero-coupon decreases with yield to maturity.
(b) given time to maturity and yield to maturity, the duration of a bond is higher when the coupon rate is lower.
(c) duration is a better measure of price sensitivity to interest rate changes than is time to maturity.
(d) given time to maturity and coupon rate, the duration of a bond is higher when the yield to maturity is lower.
