Marginal Product of Labour Is the Increase in Total Product

Multiple Choice

Marginal product of labour is the increase in total product that results from a

A) one-unit increase in the quantity of labour employed,other inputs remaining the same.
B) one-unit increase in the quantity of fixed inputs employed,holding the quantity of labour constant.
C) $1 increase in the cost of labour.
D) change in the total cost of labour.
E) one-unit increase in the minimum efficient scale.