I pick C, but it's actually an assertive C+. I've been in B, and had cars pass me on the right as I started forward and drifted right. I also feel like B is like you're deliberately provoking motorists. I sit far forward into the crosswalk, and I repeatedly glance at the car off my left hip and make sure I am noticed. just before the light changes I stand up on the pedals and start to inch forwards, knowing that my movement makes me more visible, but I am always on guard for cross traffic coming through late after the light has changed.