Which of the Following Defines Marginal Cost

Multiple Choice

Which of the following defines marginal cost?

A) It is the cost of an alternative that must be forgone in order to pursue a certain action.
B) It is the cost of producing an additional unit of output.
C) It is the cost that is independent on the level of goods or services produced by the business.
D) It is the cost that has already been incurred and cannot be recovered.
E) It is the cost incurred in making an economic exchange.