When the pilot of an aeroplane use the critical word “Mayday” three times it means the pilot and the aeroplane are ________ ?

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When the pilot of an aeroplane use the critical word “Mayday” three times it means the pilot and the aeroplane are ________ ?

A. In dangerous Situation
B. Calling for Help
C. Passengers are in panic
D. Aeroplane is in danger.