Correct option is B
A Yard can be defined by the functions it performs.
It is the place where the trains or rolling stock or group of rolling stocks are received, reformed into trains or loads after marshalling and are dispatched to their destinations.
Classification of yards:
1. Marshalling Yard
2. Passenger yard
3. Goods yard
4. Coaching yards
Marshalling yard:
The arrangement made with an elaborate set of sidings for sorting of wagons at important stations according to traffic requirements, is called marshalling yard.
Goods trains are marshaled so that wagons are placed in the order of the stations at which these are to be detached.
Marshalling Yard can be classified under three groups on the basis of the method of sorting out trains:
1. Flat Yard
2. Hump Yard
3. Gravity Yard
Locomotives yard:
This is the yard which houses the locomotive.
Facilities for watering, fueling, examining locomotives, repairing, etc., are provided in this yard.
Coaching yard:
The main function of a coaching yard is to deal with the reception and dispatch of passenger trains.
Passenger yard:
The main function of passenger yards is to provide facilities for the safe movement of passengers and passenger bogies.
Passenger platforms are used as passenger yards.