Which of the following describes a retroreflective scan?
A) The scanning method in which a target is detected as it passes between a photoelectric sensor and a reflector
B) The scanning method in which the light beam transmitted from the transmitter is reflected back to the receiver by the target to be detected
C) The scanning method in which the target to be detected passes between the transmitter and receiver, interrupting the light beam
D) The scanning method in which the receiver responds only to depolarized light reflected from a corner cube reflector or polarized sensitive tape
A
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