Two point charges 2q and q are placed at vertex A and centre of face CDEF of the cube as shown in figure. The electric flux passing through the cube is :

A

$$\frac{3q}{\epsilon_{\circ}}$$

B

$$\frac{3q}{2\epsilon_{\circ}}$$

C

$$\frac{q}{\epsilon_{\circ}}$$

D

$$\frac{3q}{4\epsilon_{\circ}}$$