Which of the following statements is true? Group of answer choices a. Compared to an mP air mass, mT air is colder and drier. b. During the winter, an air mass that moves into coastal sections of Oregon and Washington from the northwest would most likely be maritime Polar. c. A dryline is a stalled cold front. d. A stationary front does not move because the winds blow perpendicular to the front. e. Fronts are associated with high pressure