514.At an intersection equipped with both a 'left-turn arrow' and a 'circular' green light, if the 'circular greenlight' is currently illuminated, which of the following statements is correct?
(A) The circular green lightpermits travel in all directions; vehicles may turn left after yielding to oncoming through traffic.
(B) Youmust wait until the left-turn arrow green light is illuminated before turning left.
(C) When the circular greenlight is on, left turns are prohibited under any circumstances.

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