Assertion A : Airport capacity during IFR conditions is usually less than that during VFR conditions. Reason R: During clear weather condition (VFR), the aircrafts on final approach to runway can be spaced closer during poor visibility conditions. 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 but 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: B. Both A and R is true but R is not the correct explanation of A.

Assertion A is true because during IFR conditions, aircraft must fly at specific altitudes and airspeeds, and they must be separated by a certain distance. This means that there can be fewer aircraft in the air at any given time during IFR conditions.

Reason R is also true, but it is not the correct explanation of Assertion A. The reason that aircraft can be spaced closer during VFR conditions is because they can see each other and avoid collisions. During IFR conditions, aircraft must rely on instruments to fly, and they cannot see each other as well. This is why they must be spaced further apart.

In conclusion, both Assertion A and Reason R are true, but Reason R is not the correct explanation of Assertion A.