In electrostatic fields, at points with zero potential, which is right?

A、Theelectricfieldintensityisalsozero;
B、Theelectricfieldintensitymaynotbezero;
C、Whethertheelectricfieldintensityiszeroornotisrelatedtotheselectionofpotentialreferencepoint.;
D、Thedivergenceoftheelectricfieldintensityisalsobezero.