not true about air masses?

One possible statement that is not true about air masses is that they all have the same density. In reality, air masses vary in density based on their temperature, moisture content, and pressure levels.

Which of the following is not true about air masses?(1 point)

Responses

Polar air masses form in cold areas.
Polar air masses form in cold areas.

Maritime air masses form over land.
Maritime air masses form over land.

Maritime air masses form over oceans.
Maritime air masses form over oceans.

Tropical air masses form in warm areas.

The statement "Maritime air masses form over land" is not true. Maritime air masses form over oceans, not over land.