Assume a Society Can Produce Either Beer or Wine

Multiple Choice

Assume a society can produce either beer or wine. If the marginal rate of transformation of gallons of beer into gallons of wine is 0.5, then the opportunity cost of beer is

A) the 2 gallons of beer that must be forgone.
B) the 2 gallons of wine that must be forgone.
C) the 0.5 gallons of beer that must be forgone.
D) the additional 0.5 gallons of beer that can be produced.