If $X$ is a binomial variate with the range $\{0,1,2,3,4,5,6\}$ and $P(X=2)=4P(X=4),$ then the parameter p of X is :

Question

$$\begin {array} {1 1} (1)\;\frac{1}{3} & \quad (2)\;\frac{1}{2} \\ (3)\;\frac{2}{3} & \quad (4)\;\frac{3}{4} \end {array}$$