What would happen to the current in a cylindrical wire if the radius is doubled and the length of the wire halved, yet all other properties of the wire are unchanged? Assume that a constant voltage is applied across the wire.

Can you please show how (C) is the correct answer. Thank You!

A. The current would double

B. The current would be halved

C. The current would increase by a factor of eight

D. The current would stay the same

E. The current would quadruple