One of the earliest recorded air pollution events in a city that was associated with human deaths was

A) heavy smog in Los Angeles prior to the Clean Air Act.
B) disruption of the Beijing Olympic Games in 2008.
C) smoke and fog over London due to burning of coal in the late 1800s.
D) a pesticide release in India in the 1980s.
E) the 2012 forest fires outside Colorado Springs.