One of the Trends That Can Be Observed from the Following

One of the trends that can be observed from the following table of amines and their boiling points is that:

A) All secondary amines have similar boiling points.
B) Branched amines have higher boiling points than unbranched amines.
C) Secondary amines have higher boiling points than primary amines.
D) Secondary amines have lower boiling points than primary amines.
E) All molecules with similar molecular weights have similar boiling points.