The Marginal Product Is Defined As

The marginal product is defined as:

A) The ratio of total output to the amount of the variable input used in producing the output
B) The incremental change in total output that can be produced by the use of one more unit of the variable input in the production process
C) The percentage change in output resulting from a given percentage change in the amount
D) The amount of fixed cost involved.
E) None of the above