Which among the following are in the Private Sector?

1. Bongaigaon Refinery
2. Manglore Refinery
3. Haldia Refinery
4. ESSAR Oil Ltd.

Selected the correct answer from the codes given below:
Codes:

A) 1 and 2

B) 2, 3 and 4

C) 4 only

D) 1 and 4

This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 1998 (GS Paper I)