Decide Whether the Composite Functions, F $$f \circ g$$ Nd $\mathbf { g } \circ \mathrm { f }$

Multiple Choice

Decide whether the composite functions, f $$f \circ g$$ nd $\mathbf { g } \circ \mathrm { f }$ f, are equal to x.
- $f ( x ) = 2 x , \quad g ( x ) = \frac { x } { 2 }$

A) No, no
B) No, yes
C) Yes, no
D) Yes, yes