Let `vecA` be a vector parallel to the of intersection of planes `P_1 and P_2` through origin. `P_1` is parallel to the vectors `2hatj+3hatk and 3hatj-3hatk and P_2` is parallel to `hatj-hatk and 3hati+3hatj` then the angle between the vectors `vecA` and `2hati+hatj-2hatk` is (A) `pi/2` (B) `pi/4` (C) `pi/6` (D) `(3pi)/4`

Options

A. `(pi)/(2)`
B. `(pi)/(4)`
C. `(pi)/(6)`
D. `(pi)/(3)`

Answer

B