The angle of arrival, relative to the airframe, of a radio signal from an external transmitter is called ________?

The angle of arrival, relative to the airframe, of a radio signal from

1.	The angle of arrival, relative to the airframe, of a radio signal from an external transmitter is called ________?
A.	Bearing
B.	Heading
C.	Phase
D.	Approach angle
Answer» B. Heading