The vapor pressure of methanol (CH₃OH) at 25.0°C is 127.2 torr. A 4.35-g sample of methanol is placed in a 3.00 L container at 25.0°C. If the container is closed and the methanol reaches equilibrium with its vapor, what mass (in grams) of liquid methanol remains?
a. 2.89 g
b. 4.35 g
c. 1.62 g
d. 0.73 g