Subtract, and Then Simplify, If Possible $\frac { 10 } { a + 4 } - \frac { 14 } { a + 3 }$

Multiple Choice

Subtract, and then simplify, if possible. $\frac { 10 } { a + 4 } - \frac { 14 } { a + 3 }$

A) $\frac { 2 ( 2 a - 13 ) } { ( a + 2 ) ( a - 4 ) }$
B) $\frac { - 2 ( 2 a + 13 ) } { a + 3 }$
C) $\frac { - 2 ( 2 a + 13 ) } { a + 4 }$
D) $\frac { - 2 ( 2 a - 13 ) } { ( a + 4 ) ( a + 3 ) }$
E) $\frac { - 2 ( 2 a + 13 ) } { ( a + 4 ) ( a + 3 ) }$