You have the option of consuming one cup of coffee or $2$ donuts or $3$ oranges. You picked the cup of coffee. You don't like donuts at all. Therefore, opportunity cost of this cup of coffee is

A$)$ the price of the cup of coffee.

B$)2$ donuts and $3$ oranges.

C$)$ the price of the donuts as they are usually consumed with coffee.

D$)3$ oranges.