As Part of Futures Trading,exchanges Have Traders Place an Initial

Multiple Choice

As part of futures trading,exchanges have traders place an initial margin with its clearing house because:

A) as the exchange has to cover its costs.
B) as it acts like a performance bond to support the value of the futures contract.
C) the exchange wants to ensure that brokers make profits.
D) the exchange wants to ensure that futures contracts can be closed-out.