$[2$ pt$.]$ A section of copper wire in a circuit is replaced by a different copper wire that is $4$ times as long. To keep the resistance in this section the same as it was, how should the diameter of the new wire compare to that of the old wire?

A$.$ The diameter of the new wire should be $4$ times the diameter of the old wire.

B$.$ The diameter of the new wire should be $\backslash (1/4\backslash )$ the diameter of the old wire.

C$.$ The diameter of the new wire should be $\backslash (1/2\backslash )$ the diameter of the old wire.

D$.$ The diameter of the new wire should be the same as the old wire.

E$.$ The diameter of the new wire should be $2$ times the diameter of the old wire.