$A$ charge '$Q$ $\mu C$' is placed at the centre of a cube. The flux through one face and two opposite faces of the cube is respectively:

• A
  $\frac{Q}{6 \epsilon_{0}} \mu Vm, \quad \frac{Q}{3 \epsilon_{0}} \mu Vm$
• B
  $\frac{Q}{12 \epsilon_{0}} \mu Vm, \quad \frac{Q}{\epsilon_{0}} \mu Vm$
• C
  $\frac{Q}{6 \epsilon_{0}} \mu Vm, \quad \frac{Q}{2 \epsilon_{0}} \mu Vm$
• D
  $\frac{Q}{12 \epsilon_{0}} \mu Vm, \quad \frac{Q}{3 \epsilon_{0}} \mu Vm$