When LIBOR Is Used as the Discount Rate

When LIBOR is used as the discount rate

A) The value of a swap is worth zero immediately after a coupon payment
B) The value of a swap is worth zero immediately before a coupon payment
C) The value of the floating rate bond underlying a swap is worth par immediately after a coupon payment
D) The value of the floating rate bond underlying a swap is worth par immediately before a coupon payment