Which scenario BEST illustrates how the phenomenon of thermal inversion impacts pollution?
A. In a valley during the night, a layer of cold air becomes trapped beneath a layer of warmer air, causing pollutants to accumulate near the valley floor.
B. During a summer day, warm air near the ground rises, carrying pollutants with it and dispersing them into the atmosphere.
C. On a windy day, pollutants from a factory are quickly blown away, preventing any accumulation near the ground.
D. During a thunderstorm, pollutants are washed away from the air due to heavy rain.