About Gauss's law, which of the following statements is TRUE?

A、If the electric flux through a closed surface is zero, there must be no charge inside the closed surface.;
B、If there is no charge inside the surface, the electric field inside the surface is zero.;
C、If the electric field inside the closed surface is uniform, there is no charge inside the closed surface.;
D、If there is no net charge inside the surface, the electric field over the enclosed surface must be zero.