I need just correct option in 10 mins I will give you thumb up no need explaination thanks

What is the definition of demand for federal funds? a. It is the amount of federal funds banks want to borrow from other banks. b. It is the amount of federal funds banks want to borrow from the Fed. c. It is the amount of federal funds banks want to hold at their Fed accounts. d. It is the amount of federal funds banks want to borrow from the Public. e. None of the above