Collect Like Terms $4 x^{2} y+9 z^{2} y+9 x^{2} y-4 z^{2} y$

Multiple Choice

Collect like terms.
- $4 x^{2} y+9 z^{2} y+9 x^{2} y-4 z^{2} y$

A) $18 z^{2} y$
B) $5 x^{2} y+13 z^{2} y$
C) $18 x^{2} y$
D) $13 x^{2} y+5 z^{2} y$