Answer:
The correct answer is option A.
Explanation:
The marginal product of labor is the change in total output due to hiring an additional worker. It is measured as the ratio of change in output to change in labor. It depends on the value of labor and capital employed.
The marginal revenue product of labor is the additional revenue generated because of hiring an additional worker. It is also known as the value of the marginal product. It is calculated as the marginal product of labor multiplied to the product price.