Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: some people wrongly think that ozone is the refreshing air, we breath it at the seaside. It is, in fact a poisonous kind of oxygen.
Reason R: Air pollution was first brought to a sharp focus when air pollution epidemics took place is Los Angels(1940) and London(1952).
In the light of the above statements, choose the correct answer from the options given below: