The coal mines, ordered from north to south, are:
- Singrauli (III): Situated in Madhya Pradesh and Uttar Pradesh, this is the northernmost mine.
- Korba (IV): Located in Chhattisgarh, south of Singrauli.
- Singareni (I): Found in Telangana, further south than Korba.
- Neyveli (II): Located in Tamil Nadu, this is the southernmost mine on this list. Therefore, option (C) is correct.