Consider Two Copper Wires of Equal Cross-Sectional Area

Multiple Choice

Consider two copper wires of equal cross-sectional area.One wire has 3 times the length of the other.How do the resistivities of these two wires compare?

A) Both wires have the same resistivity.
B) The longer wire has 3 times the resistivity of the shorter wire.
C) The longer wire has 9 times times the resistivity of the shorter wire.
D) The longer wire has 27 times times the resistivity of the shorter wire.