A remote pilot is planning a flight near an airport depicted with a dashed blue line on a sectional chart. The number [25] is shown inside the airspace. What does this indicate?
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A
This is Class G airspace, and no authorization is needed up to 2,500 feet AGL.
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B
This is Class D airspace, which extends from the surface up to 2,500 feet MSL.
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C
This is Class B airspace, requiring clearance for all operations.
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D
This is a Military Operations Area, and the flight is prohibited.