In approach areas of runways equipped with instrumental landing facilities any object within 4.5 km distance from runway end shall be considered as an obstruction if its height is more than______________?

In approach areas of runways equipped with instrumental landing facilities any object within 4.5 km distance from runway end shall be considered as an obstruction if its height is more than______________?

A. 20 m
B. 30 m
C. 45 m
D. 51 m

Assertion A: The width of a taxiway is smaller than the runway width. Reason R : The speed of the aircraft on a taxiway is greater than that on runway.?

Assertion A: The width of a taxiway is smaller than the runway width. Reason R : The speed of the aircraft on a taxiway is greater than that on runway.?

Select your answer based on coding system given below
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are 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