Assertion A : The ratio of arriving and departing aircrafts influences the airport capacity:
Reason R : Landing operation is generally given priority over the taking off operation.
Select your answer based on the coding system given below:

A. Both A and R is true and R is the correct explanation of A

B. Both A and R is true and R is not the correct explanation of A

C. A is true but R is false

D. A is false but R is true

Answer: Option A