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Suppose that the standard deviation of monthly changes in the price of spot corn is (in cents per pound) 2. The standard deviation of monthly changes in a futures price for a contract on com is 3 . The correlation between the futures price and the commodity price is 0.9. It is now September 15. A cereal producer is committed to purchase 100,000 bushels of com on December 15. Each corn futures contract is for the delivery of 5,000 bushels of corn. The number of futures contracts the cereal producer needs to buy or sell is: A) 12 B) 10 C) 18 D) 24