Question:
Mark against the correct answer in each of the following:
If $O$ is the origin and $P(1,2,-3)$ is a given point, then the equation of the plane through $P$ and perpendicular to OP is
A. $x+2 y-3 z=14$
B. $x-2 y+3 z=12$
C. $x-2 y-3 z=14$
D. None of these
Solution:
