A Cubical Gaussian Surface Is Placed in a Uniform Electric

A cubical Gaussian surface is placed in a uniform electric field as shown in the figure. The length of each edge of the cube is 1.0 m. The uniform electric field has a magnitude of 5.0 × 10⁸ N/C and passes through the left and right sides of the cube perpendicular to the surface. What is the total electric flux that passes through the cubical Gaussian surface?

A) 5.0 × 10⁸ N.m²/C
B) 3.0 × 10⁹ N.m²/C
C) 2.5 × 10⁶ N.m²/C
D) 1.5 × 10⁷ N.m²/C
E) zero N.m²/C