Which of the Following Describes How Output Changes in the Short

Multiple Choice

Which of the following describes how output changes in the short run? Because of specialisation and the division of labour, as more workers are hired

A) output will first increase at an increasing rate, then output will increase at a decreasing rate.
B) output will first decrease at an increasing rate, then increase at a decreasing rate.
C) the marginal product of labour will first decrease, then increase at a decreasing rate.
D) the marginal product of labour will first be negative and then will be positive.