A hollow cylinder has a charge q coulomb within it. If $\phi$ is the electric flux in units of voltmeter associated with the curved surface B, the flux linked with the plane surface A in units of voltmeter will be- <img src =""/>

Question

https://clay6.com/mpaimg/73_a.jpg

( A ) $\frac{1}{2} (\frac{q}{\epsilon_0} - \phi)$
( B ) $\frac{\phi}{3}$
( C ) $\frac{q}{2\epsilon_0}$
( D ) $\frac{q}{\epsilon_0} - \phi$