A. An interest rate floor can be defined as a series of interest rate call options with different expiry dates but same exercise rate.

B. An interest rate collar can be defined as a series interest rate puts (with different expiry dates but same exercise rate) and calls (also with different expiry dates but same exercise rate). Each put having the same expiry date as a call and vice versa.

C. An interest rate cap offers protection to the buyer (lender) if interest rates rise.