In Application 13

In Application 13.2, "The Farmer's Almanac: It's a Necessity,"

A) it was pointed out that the almanac gives farmers a sure way to predict where corn and wheat prices are headed.
B) farmers' decisions about selling their crops are complicated by weather, family necessities, foreign crops, and other factors.
C) supply and demand fluctuate less in the market for corn than for any other crop.
D) all of the above.