Find the Coefficient $a$ Of the Term in the Expansion of the Binomial

Multiple Choice

Find the coefficient $a$ of the term in the expansion of the binomial.
$\begin{array}{ll}\text { Binomial } & \text { Term } \\ (4 x+3 y) ^{6} & a x^{2} y^{4}\end{array}$

A) $a = 10$
B) $a = 19,440$
C) $\quad a = 12$
D) $\quad a = 729$
E) $\quad a = 360$