What is happening in the picture?


A)
Sunlight is reacting with waste gases produced by cellular respiration from the trees to produce chemical smog.


B)
Sunlight is reacting with waste gases produced by cellular respiration from the trees and by vehicles burning fossil fuels to produce chemical smog.


C)
Sunlight is reacting with water vapor produced by vehicles burning fossil fuels to produce photochemical smog.


D)
Sunlight is reacting with waste gases produced by vehicles burning fossil fuels to produce photochemical smog.