How does geography play a role in Mexico City's air pollution problem? O A The city is surrounded by a tropical rainforest, which traps air pollutants.
OB. The cars and factories send pollution into the air, which increases air pollutants.
OCThe city is surrounded by the Sierra Madre Mountains, which trap air pollutants.
OD It is one of the world's largest and most populated cities, which increases air pollutants.