Correct option is C
The berths in all the classes together are vacant in Trains B =
(200-190)+(200-183)+(400-348)+(300-215)+(500-414)
10 + 17+ 52 + 85 + 86 = 250
The berths in all the classes together are vacant in Trains C=
2 + 9+ 36+ 9 + 16 = 72
Total number of vacant berth= 250 + 72 = 322




