John works for Brown Corp. His company will have to purchase wheat in the future in order to make their Brown products. Wheat is currently at a price of $4 per bushel today. John wants to eliminate the risk that the price the company pays for wheat will exceed $4 per bushel. Which of the following positions would John take to hedge against an increase in the price of wheat?

A. A long position in a forward contract on wheat with a contract price of $4 per bushel

B. A long put option on wheat with a strike price of $4

C. A long call option with a strike price of $4 per bushel

D. (a) and (b)

E. (a) and (c)