Gauss Law|Flux through closed surface

Assertion : The magnetic flux through a closed surface containing a bar magnet is zero. Reason : Gauss's law applies in the case of electric flux only.

The total electric flux through any closed surface from gauss law is given by ?

Which of the following law gives a relation between the electric flux through any closed surface and the charge enclosed by the surface ?

Which of the following statements is//are correct? a. Electric field calculated by Gauss law is the field due to only those charges which are enclosed inside the Gaussian surface. b. Gauss law is applicable only when there is a symmetrical distribution of charge. c. Electric flux through a closed surface is equal to total flux due to all the charges enclosed within that surface only.

Electric flux through a closed surface in free space enclosing a charge q is