Constant Returns to Scale in the Matching Function Means That $x > 0$

Multiple Choice

Constant returns to scale in the matching function means that, given any constant $x > 0$

A) $m ( x Q , x A ) > x m ( Q , A )$ .
B) $m ( x Q , x A ) < x m ( Q , A )$ .
C) $m ( x Q , x A ) = \mathrm { e } ^ { \mathrm { x } m } ( Q , A )$ .
D) $m ( x Q , x A ) = \frac { 1 } { x } m ( Q , A )$ .
E) $m ( x Q , x A ) = x m ( Q , A )$ .