Official Answer Key & Detailed Solution
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Correct Answer: Option (A) — Cairn Energy
Concept & Option Breakdown
Standard Reference VerifiedCairn Energy (later Cairn India, now part of Vedanta Resources) discovered and developed the major onshore oil fields in the Barmer-Sanchor Basin in Rajasthan, including the Mangala, Bhagyam, and Aishwariya oil fields.
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