Identify the True Statement

Multiple Choice

Identify the true statement.

A) Decreasing returns to scale and diminishing marginal returns are just two different ways of saying the same thing.
B) Returns to scale pertains to the impact on output of increasing all inputs simultaneously; diminishing marginal returns pertains to the impact of changing a single input while holding all other inputs constant.
C) Returns to scale pertains to the impact on output of changing a single input while holding all other inputs constant; diminishing marginal returns pertains to the impact on output of increasing all inputs simultaneously.
D) Returns to scale can be identified by calculating the slope of an isoquant.