Driving quiz: Making a left turn...

You are the first vehicle to pull up and stop at an intersection controlled by a traffic light, which is currently red. There is no left turn lane or separate left turn signal. When the light turns green you:

(A) Remain at the stop line and don’t move until traffic is clear, then make the left turn.

(B) Proceed toward the center of the intersection and stop again, wait until traffic is clear, then complete the left turn.

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B is how I drive, how I was taught to drive, and arguably most sensible way to drive for a variety of reasons. But A is what I see drivers do increasingly often. What’s changed?