Which among the curves shown in the figure cannot possibly represent electrostatic field lines?

(A, B, D, E) The field lines shown in $(a)$ do not represent electrostatic field lines because field lines must be normal to the surface of the conductor.
$(b)$ The field lines shown in $(b)$ do not represent electrostatic field lines because the field lines cannot emerge from a negative charge and cannot terminate at a positive charge.
$(c)$ The field lines shown in $(c)$ represent valid electrostatic field lines as they emerge from positive charges and repel each other.
$(d)$ The field lines shown in $(d)$ do not represent electrostatic field lines because the field lines should not intersect each other.
$(e)$ The field lines shown in $(e)$ do not represent electrostatic field lines because electrostatic field lines cannot form closed loops.