Charge or Block?

[Dave9819]

A1 drives the lane.

B1 is set and standing on the lane line and is not moving, is vertical, etc, however, is not facing A1's torso.

On the drive, A1 contacts B1's shoulder.

A1 is not hindered and B1 falls to the ground. Since A1 hit B1's shoulder, would that be a charge on A1, Block on B1, or a "no call" (if B1 decided to embelish and go down to the ground)?

Thanks!