Assertion: Upon displacement of charges within a closed surface, E at any point on the surface does change.
Reason: The flux crossing through a closed surface is dependent on the location of charge within the surface.
Options:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false and R is also false.