Perform the Indicated Operations and Simplify the Result $$\frac { \frac { 3 } { x + 5 } + \frac { 9 } { x + 3 } } { \frac { 2 x + 9 } { x ^ { 2 } + 8 x + 15 } }$$

Multiple Choice

Perform the indicated operations and simplify the result. Leave the answer in factored form.
- $$\frac { \frac { 3 } { x + 5 } + \frac { 9 } { x + 3 } } { \frac { 2 x + 9 } { x ^ { 2 } + 8 x + 15 } }$$

A) $2 x + 9$
B) $\frac { 1 } { 6 }$
C) 12
D) 6