The velocity of projection of an oblique projectile is $(6i +8j)m/s$ . The horizontal range of projectile is $( g=10 m/s)^2$

Question

$\begin{array}{1 1}(A)\;4.9 \;m\\(B)\;9.6\;m \\(C)\;19.6\;m\\(D)\;14 \;m \end{array} $