Marginal benefit from food crops

Select one:

a. equals the marginal cost of food crops.

b. remains constant as the quantity of food crops increases from 1 tonne a day to 2 tonnes a day.

c. increases as the quantity of food crops increases from 1 tonne a day to 2 tonnes a day.

d. equals 70 barrels of ethanol.

e. cannot be calculated from the table.