The following illustrates the concept of opportunity cost, except for _____

Group of answer choices

A. A farmer's land is planted with rice, therefore, it is not available for growing other grain or vegetable crops.

B. A growing economy can produce more consumer goods and substitute capital goods in the economy at the same time.

C. Resources devoted to the production of consumer goods are not available for capital goods production.

D. If I buy a ticket to see my favourite band, I will not be able to buy my mother a birthday present.