There Is a Futures Contract for the Purchase of 100

Multiple Choice

There is a futures contract for the purchase of 100 bushels of wheat at $2.50 per bushel. At the end of the day when the market price of wheat increases to $3.00 per bushel:

A) the buyer (long position) needs to transfer $50 to the seller (short position) .
B) the seller (short position) needs to transfer $50 to the buyer (long position) .
C) nothing happens since with a futures contract all payments are made at the settlement date.
D) nothing happens since marked to market adjustments only take place when the market price falls below the contract price.