The Density of the Vapor of Allicin,a Component of Garlic,is $\degree$

The density of the vapor of allicin,a component of garlic,is 1.14 g.L ^{- 1} at 125 $\degree$ C and 175 Torr.What is the molar mass of allicin?

A) 21.6 g.mol 1^{- 1}
B) 50.8 g.mol ^{- 1}
C) 273 g.mol ^{- 1}
D) 869 g.mol ^{- 1}
E) 162 g.mol ^{- 1}