What does the steady (non-flashing) yellow light of a traffic light indicate?

What does the steady (non-flashing) yellow light of a traffic light indicate?
A)Pass with caution.
B)Stop as if it were a steady red light.Correct
The steady yellow light indicates that we must stop as if it were a steady red light, unless when it lights up the vehicle is so close to the stopping point that it cannot stop safely.
If the light is flashing yellow or two alternately flashing lights, it requires drivers to exercise extreme caution and, where appropriate, yield. In addition, they do not exempt compliance with other signs that require stopping. In that case the correct answer would have been a).