Why is it impossible for the lines of force of an electric field to cross one another?

A.

like charges repel each other

B.

a charged particle is deflected by an eletric field

C.

like charges are arranged on the same line of force

D.

a positively charged particle can travel in only one direction at any time

E.

none of these is correct

Correct answer is D

No explanation has been provided for this answer.