The Difference Between the Cash Market and the Futures Market

The difference between the cash market and the futures market is:

A) that commodity prices cannot be negotiated in the futures market, while they can be in the cash market.
B) that larger margins are used in the cash market.
C) that in the cash market, there must be a transfer of the physical possession of the goods.
D) that the commodities are usually less expensive in the futures market.