JEE Math Practice Question

The distance of the point (1, 3, – 7) from the plane passing through the point (1, –1, – 1), having normal perpendicular to both the lines $${{x - 1} \over 1} = {{y + 2} \over { - 2}} = {{z - 4} \over 3}$$ and $${{x - 2} \over 2} = {{y + 1} \over { - 1}} = {{z + 7} \over { - 1}}$$ is :

1. A.$${{10} \over {\sqrt {83} }}$$
2. B.$${{5} \over {\sqrt {83} }}$$
3. C.$${{10} \over {\sqrt {74} }}$$
4. D.$${{20} \over {\sqrt {74} }}$$