A solution contains naphthalene (C₁₀H₈) dissolved in hexane (C₆H₁₄) at a concentration of 12.35% naphthalene by mass. Calculate the vapor pressure at 25 C of hexane above the solution. The vapor pressure of pure hexane at 25 C is 151 torr.

A) 125 torr
B) 138 torr
C) 12.5 torr
D) 139.5 torr