Sign 1 is a sign for the overpass route crossing, only go straight or turn left on the overpass Signal 2 is a sign for the overpass route , can only go straight or turn right on the overpass Sea 3 is a sign of rainbow (buildings with large rainbow affect visibility)
Sea 1 and 2.
Sea 1 and 3.
Sea 2 and 3.
Correct answer :a
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