Consider the following pairs:
| Railway Zone | Headquarter |
| 1. North Eastern Railway | Gorakhpur |
| 2. East Central Railway | Kolkata |
| 3. South East Central Railway | Bilaspur |
| 4. South Eastern Railway | Secunderabad |
Which of the pairs given above are correctly matched?
1
1 and 2 only
2
3 and 4 only
3
1 and 3 only
4
2 and 4 only