For a binomial variate $X$, if $n=4$ and $P(X = 4) =6 \; P(X =2)$, then the value of $p$ is

Question

( A ) $\frac{4}{7}$
( B ) $\frac{3}{7}$
( C ) $\frac{6}{7}$
( D ) $\frac{5}{7}$