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. A is false but R is true
• 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. Both A and R is true and R is the correct explanation of A

Answer: (D)