Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Air pollution causes significant deterioration in visibility.
Reason (R) : The rates of emissions or formation of pollutants greatly exceed the rate at which the pollutants are dispersed by winds or removed by chemical reaction.
In the light of the above statements, choose the most appropriate answer from the options given below :