A Point Particle with Charge Q Is at the Center $\varepsilon$

A point particle with charge q is at the center of a Gaussian surface in the form of a cube. The electric flux through any one face of the cube is:

A) q/ $\varepsilon$ ₀
B) q/4 $\pi$$\varepsilon$ ₀
C) q/4 $\varepsilon$ ₀
D) q/8 $\varepsilon$ ₀
E) q/16 $\varepsilon$ ₀