In 1952 London England, 4,000 people died of a type of foggy smog. What would be the probable cause for this pollution A) The daily primary pollution added to secondary pollution created a killer fog.
B) Industries were burning too much coal and heavy oil and it created smog.
C) The surrounding countryside had an overpopulation of grazing animals emitting too much
ammonia.
D) The number of diesel road vehicles such as cars, buses, and trucks tripled after World War II.
E) None of the above.