Add Simplify, If Possible $\frac{4}{m-n^{2}}+\frac{9}{n^{2}-m}$ A) $\frac{5}{m-n^{2}}$ B) $\frac{13}{m-n^{2}}$ C) $\frac{36}{m-n^{2}}$ D) $\frac{-5}{m-n^{2}}$

Multiple Choice

Add. Simplify, if possible.
- $\frac{4}{m-n^{2}}+\frac{9}{n^{2}-m}$

A) $\frac{5}{m-n^{2}}$
B) $\frac{13}{m-n^{2}}$
C) $\frac{36}{m-n^{2}}$
D) $\frac{-5}{m-n^{2}}$