Which among the curve shown in cannot posibly represent electrostatic field lines?

Explanation

(i) Fig (a) cann not represent electrostatic field lines because field lines must start normally from the surface of a conductor.
(ii) Fig . (b)Cannot represent electrostatic field lines because electric field lines must start from +ve charge and end at -ve charge. field lines cannot end at +ve charge.
(iii) Fig. (c) represent electrostatic field lines. Moreover from field lines we guess that the two +ve charges are equal or almost equal.
(vi) Fig (d). Cannot represent field lines because field lines can never interest with each other. Moreover, they cannot end on +ve charges.
(v) Fig. (e) cannot represent field lines because electrostatic field lines cannot form closed loops and must start and end at the surface of a charged conductor normally.