Match the following railway zones with it's headquarters.

1. East central Railway ------------------ i.  Guwahati

2. North Eastern Railway --------------- ii.  Gorkhapur

3. North Frontier Railway---------------- iii. Secunderabad

4. South East Central Railway---------- iv. Hajipur

5. South Central Railway----------------- v. Bilaspur

a. 1- ii, 2- v, 3-i, 4- iii ,5-iv

b. 1- iv, 2- ii, 3-i, 4- v ,5-iii

c. 1- iv, 2- v, 3-i, 4- iii , 5-ii

d. 1- iii, 2- v, 3-ii, 4- i ,5-iv

ANSWER: 1- iv, 2- ii, 3-i, 4- v ,5-iii