A Plot of Ln(vapor Pressure) Versus 1/T for Methanol Gives

A plot of ln(vapor pressure) versus 1/T for methanol gives a straight line with an intercept of 13.6.The entropy of vaporization of methanol is

A) 611 J.mol^-1.K^-1.
B) 113 J.mol^-1.K^-1.
C) 1640 J.mol^-1.K^-1.
D) Not enough information given to calculate.
E) 13.6 J.mol^-1.K^-1.