Provide an Appropriate Response $\mathrm { f } _ { \mathrm { xy } }$

Multiple Choice

Provide an appropriate response.
-Which order of differentiation will calculate $\mathrm { f } _ { \mathrm { xy } }$ faster, $x$ first or $\mathrm { y }$ first?
$$f ( x , y ) = \frac { 1 } { g ( y ) } , g ( y ) \neq 0$$

A) x first
B) y first