Perform the Indicated Operation $\frac { 4 } { x } - \frac { 3 x + 15 } { x ^ { 2 } + 4 x } + \frac { x } { x + 4 }$

Multiple Choice

Perform the indicated operation. $\frac { 4 } { x } - \frac { 3 x + 15 } { x ^ { 2 } + 4 x } + \frac { x } { x + 4 }$

A) $\frac { x ^ { 2 } + x - 1 } { x ( x + 4 ) }$
B) $\frac { x ^ { 2 } + x + 1 } { x ( x + 4 ) }$
C) $\frac { x ^ { 2 } - x + 1 } { x ( x + 4 ) }$