A cubical region of side a has its centre at the origin. It encloses three fixed point charges, `-q` at `(0,-a//4,0)`, `+3q` at `(0, 0, 0)` and `-q` at `(0, +a//4, 0)`. Choose the correct options(s)

Options

A. The net electric flux crossing the plane `x = + a//2` is equal to the net electric flux crossing the plane `x = - a//2`
B. The net electric flux crossing the plane `y = + a//2` is more than the net electric flux crossing the plane `y = - a//2`
C. The net electric flux crossing the entire region is `(q)/(in_(0))`
D. The net electric flux-crossing the plane `z = + a//2` is equal to the net electric flux crossing the plane `x = + a//2`