The line joining the points $6\overrightarrow a-4\overrightarrow b-5\overrightarrow c$ and $-4\overrightarrow c$ and the line joining the points $-\overrightarrow a-2\overrightarrow b-3\overrightarrow c$ and $\overrightarrow a+2\overrightarrow b-5\overrightarrow c$ Intersects at the point ?
$\begin{array}{1 1} (a)\:2\overrightarrow c\:\:\:\qquad\:(b)\:-4\overrightarrow c\:\:\:\qquad\:(c)\:8\overrightarrow c\:\:\:\qquad\:(d)\:4\overrightarrow c. \end{array}$