The resistance of a 100-cm wire of cross sectional area 2x10^-6, m^2 is 250ohm. What is the resistivity of the material of this wire?

A. 5x10^-4

B. 0.5x10^-6

C. 0.5x10^-4

D. 5x10^-6

(All answer units are in ohmXm)

Pleae also answer the above question for these numbers:

100-cm wire

2x10^-6 cross area

200ohm

And choose on of these answers:

A. 0.4x10^-6

B. 4.0x10^-6

C. 4.0x10^-4