538.Regarding 'lane control signals,' which of the following descriptions is correct?
(A) Red, yellow, and greencircular lights control vehicle movement at intersections, installed at intersections.
(B) A red 'X' light and agreen '↓' or '→' arrow light control the use of individual lanes, commonly used on reversible lane sections.
(C) Red and green pedestrian figure lights indicate whether pedestrians may cross, installed at the endsof pedestrian crossings.

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