Which of the following is the headquarters of the newly established railway zone 'East Coast Railways'?

Headquarters of which one among the following Railway Zones in India is situated at the highest elevation from the mean sea level?

With reference to headquarters of the various Railway zones, consider the following matches:
North Eastern → Guwahati
Central → Bhopal
Western → Mumbai
Which of the above is / are correct matches:

The headquarter of Central Railway situated at?

The monies in the National Investment Fund can be used for ________:
1. Recapitalization of public sector banks
2. Purchasing the shares of CPSEs
3. Towards operating expenses of Indian Railways
4. Social Overheads such as building schools, toilets etc.
Select the correct option from the codes given below: