What Are the Formula Masses of Water $\mathrm { H } _ { 2 }$

Multiple Choice

What are the formula masses of water, $\mathrm { H } _ { 2 }$ O; propene, $\mathrm { C } _ { 3 }$ $\mathrm { H } _ { 6 }$ ; and 2-propanol, $\mathrm { C } _ { 3 }$ $\mathrm { H } _ { 8 }$ O?

A) water: 18 amu; propene: 40 amu; 2-propanol: 58 amu
B) water: 18 amu; propene: 42 amu; 2-propanol: 62 amu
C) water: 18 amu; propene: 42 amu; 2-propanol: 60 amu
D) water: 18 amu; propene: 44 amu; 2-propanol: 64 amu