Arrange benzaldehyde (mol. wt. 106), benzyl alcohol (mol. wt. 108), and p-xylene (mol. wt. 106) in order of increasing boiling point.
a. Benzaldehyde, p-xylene, benzyl alcohol
b. Benzyl alcohol, benzaldehyde, p-xylene
c. p-xylene, benzaldehyde, benzyl alcohol
d. Benzyl alcohol, p-xylene, benzaldehyde