Equation of chord of the hyperbola $25x^2-16y^2=400$ which is bisected at the point $(6,2)$ is

Question

$\begin{array}{1 1}(A)\;a\;16x-75y=418 \\(B)\;75x-16y=418 \\(C)\;25x-4y=400 \\(D)\;none\;of\;these \end{array}$