All superfast train numbers will not start with 2.
B
Correct answer
Explanation
The statement 'All superfast train numbers will not start with 2' is false because superfast train numbers in Indian Railways can start with various digits including 2. Superfast trains are identified by their speed (average speed including halts must be 55 km/h or above), not by number-based restrictions. The double negative construction means 'No superfast trains start with 2', which is incorrect.