Correct option is (C) ohm-cm
The resistivity \(\rho\) of a material may be expressed in units of ohm-cm.
Resistivity of a conductor is defined as the resistance of a conductor of unit length and unit area of cross-section.
Resistivity, \(\rho= \frac{RA}l\)
where, l is the length of the conductor, A is the area of cross-section of the conductor and R is the resistance of the conductor.