What does a segment labeled MEA imply about obstacle clearance and nav signal?

What does a segment labeled MEA imply about obstacle clearance and nav signal?

• A. It indicates the segment has no obstacle clearance requirements.
• B. It ensures obstacle clearance and adequate navigation signal coverage along the segment.
• C. It marks the segment as beyond the range of ground NAVAIDs.
• D. It designates the segment's weather minimums.

Answer: (B)