PLZ HELP A group of students simulates colliding air masses. Using an index card for separation, a jar of warm tap water with red food coloring is placed over a jar of cold water with yellow food coloring. The index card that separates the two bodies of water is removed. Students observe how the two fronts travel in relation to one another.

A.) Air masses are not distinguisable by color.
B.) Air masses are neither hot nor cold in temperature
C.) Air masses do not collide in real life
D.) Air masses cannot be modeled