$\left(-4 m n+4 m n^{2}-2 m^{2} n^{2}\right)+\left(5 m^{2} n+12 m^{2} n^{2}-5 m n\right)$

Multiple Choice

$\left(-4 m n+4 m n^{2}-2 m^{2} n^{2}\right) +\left(5 m^{2} n+12 m^{2} n^{2}-5 m n\right)$

A) $-9 m n+9 m^{2} n+10 m^{2} n^{2}$
B) $1 m n+4 m n^{2}+5 m^{2} n+10 m^{2} n^{2}$
C) $10 \mathrm{~m}^{2} \mathrm{n}^{2}$
D) $10 m^{2} n^{2}+5 m^{2} n+4 m n^{2}-9 m n$