A Point Charge Q = +1 μC Is Located at the Origin

A point charge q = +1 μC is located at the origin. What is the flux of the electric field of this charge through a square whose corners are (x, y, z) = (1, 1, 1) , (-1, 1, 1) , (-1, 1, -1) , and (1, 1, -1) ?

A) 11.3 × 10⁴ Nm²/C
B) 0.5 × 10⁴ Nm²/C
C) 0
D) 1.0 × 10⁴ Nm²/C
E) 1.9 × 10⁴ Nm²/C