400
500
600
800
Answer is Right!
Answer is Wrong!
The correct answer is: C. 600
A D class station board is placed 600 meters from the end of the platform. This is to ensure that passengers have enough time to disembark and board the train safely.
Option A: 400 meters is too close to the end of the platform, and passengers may not have enough time to disembark and board the train safely.
Option B: 500 meters is a safe distance from the end of the platform, but it may not be enough space for all passengers to disembark and board the train at the same time.
Option D: 800 meters is too far from the end of the platform, and passengers may have to walk a long way to reach the train.