Specify the Domain Of $( g \circ f ) ( x )$

Multiple Choice

Specify the domain of $( g \circ f ) ( x )$ for the pair of functions $f ( x ) = \frac { 5 } { x } \text { and } g ( x ) = 7 x - 5$

A) $( - \infty , 0 ) \cup ( 0 , \infty )$
B) $( 0 , \infty )$
C) $( - \infty , 0 )$
D) $( - \infty , \infty )$