Which of the Following Is Not a Typical Property of a Discount

Multiple Choice

Which of the following is not a typical property of a discount function $d ( t )$ ?

A) $d ( t )$ is non-decreasing in the maturity $t$ .
B) $d ( t )$ is non-increasing in the maturity $t$ .
C) $d ( t )$ decreases as the zero-coupon rate $z ( t )$ for maturity $t$ increases.
D) $d ( t )$ is independent of compounding convention.