An Arctic Air Mass Differs from a Polar Air Mass

An Arctic air mass differs from a Polar air mass in that:

A) Arctic air masses are colder than Polar air masses
B) Arctic air masses contains less moisture than Polar air masses
C) Arctic air masses originate from continental regions,whereas a Polar air masses originate over oceans
D) Arctic air masses originate over Arctic oceans and nearby land,whereas Polar air masses form over a distinct latitude zone from 50 to 60 degrees latitude
E) Arctic air masses originate over form over the eastern Arctic,whereas Polar air masses form over western Arctic oceans