A Wire of Length L,cross Sectional Area a and Resistance $\times$

Multiple Choice

A wire of length L,cross sectional area A and resistance R is now drawn out by pulling such that its new resistance is 25R.What is its new cross sectional area? (Assume the density remains constant.)

A) 1.00 $\times$ 10^-1 A
B) 6.67 $\times$ 10^-1 A
C) 4.00 $\times$ 10^-1 A
D) 2.50 $\times$ 10^-1 A
E) 2.00 $\times$ 10^-1 A