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

The correct answer is: A. Both A and R is true and R is the correct explanation of A.

The ratio of arriving and departing aircrafts influences the airport capacity because the airport must have enough runways and taxiways to handle both types of operations. If there are too many arriving aircrafts, the airport may have to delay or cancel some flights. If there are too many departing aircrafts, the airport may have to wait for departing aircrafts to clear the runway before allowing arriving aircrafts to land.

Landing operation is generally given priority over the taking off operation because it is safer to land an aircraft than to take off. If an aircraft has a problem during landing, it can usually glide to a safe landing. If an aircraft has a problem during takeoff, it may not be able to climb to a safe altitude and may crash.

Therefore, both A and R are true and R is the correct explanation of A.