Barbiturates Are Synthetic Drugs Used as Sedatives and Hypnotics $\degree$ C/m; Boiling Point of Pure Acetic Acid = 117

Barbiturates are synthetic drugs used as sedatives and hypnotics. Barbital (? = 184.2 g/mol) is one of the simplest of these drugs. What is the boiling point of a solution prepared by dissolving 42.5 g of barbital in 825 g of acetic acid? K_b = 3.07 $\degree$ C/m; boiling point of pure acetic acid = 117.9 $\degree$ C

A) 117.0 $\degree$ C
B) 117.7 $\degree$ C
C) 118.1 $\degree$ C
D) 118.8 $\degree$ C
E) >120 $\degree$ C