A flat, square surface with sides of length L is described by the equations $x=L,0\le y\le L,0\le z\le L$

The electric flux through the square due to a positive point charge q located at the origin (x = 0, y = 0, z = 0) is

• A

  $\frac{q}{4{\epsilon }_0}$

• B

  $\frac{q}{6{\epsilon }_0}$

• C

  $\frac{q}{24{\epsilon }_0}$

• D

  $\frac{q}{48{\epsilon }_0}$