What is an area identified by the term "clearway"?
A.centrally located about the extended centerline and under airport authorities, which does not contain obstructions and can be considered when calculating takeoff performance.
B.An area, at least the same width as the runway, capable of supporting an airplane during a normal takeoff.
C.An area beyond the takeoff runway, which is able to support the airplane, for use in decelerating the airplane during an aborted takeoff.
正确答案是A