If N Moles of an Ideal Gas Are Compressed Isothermally $n C_{v} \int d T / T$

Multiple Choice

If n moles of an ideal gas are compressed isothermally from an initial volume V1 to a final volume V2, the change in entropy is:

A) nR ln (V2/V1)
B) nRT ln (V2/V1)
C) nkB ln (V2/V1)
D) $n C_{v} \int d T / T$
E) n Cv/T