What does ME-IR stand for and what operations does it authorize?

What does ME-IR stand for and what operations does it authorize?

• A. ME-IR stands for Maximum Engine-power Instrument Rating; authorizes operation of any aircraft under IFR.
• B. ME-IR stands for Multi-Engine Instrument Rating; authorizes operation of a single-engine aircraft under IFR with all engines operational.
• C. ME-IR stands for Multi-Engine Instrument Rating; it authorizes pilots to operate a multi-engine aircraft under IFR with one engine inoperative (OEI) and perform instrument approaches in IMC, subject to regulatory and operator limitations.
• D. ME-IR stands for Multi-Engine Instrument Rating; authorizes operation of a multi-engine aircraft under VFR with full engine power and standard approaches.

Answer: (C)