A passage states: 'The helicopter's autorotation capability allows pilots to land safely even without engine power, provided they maintain adequate rotor RPM throughout the descent.' What is the PRIMARY condition for a successful autorotation landing?
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A
The helicopter must have a backup engine engaged
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B
Adequate rotor RPM must be maintained throughout the descent
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C
The pilot must radio for emergency assistance
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D
The landing gear must be deployed before descent begins