How can I write this sentence the best possible way?

Hi teachers. How can I write this sentence the best possible way? Are any of the suggestions okay?

1) Startled by the sound, Annie stumbles backwards and crashes into some stacked boxes, dropping the bottle on the floor where it breaks.

2) Startled by the sound, Annie stumbles backwards, crashing into some stacked boxes and dropping the bottle on the floor where it breaks.

3) Startled by the sound, Annie stumbles backwards, crashing into some stacked boxes and drops the bottle on the floor where it breaks.

4) Startled by the sound, Annie stumbles backwards, crashes into some stacked boxes, and drops the bottle which breaks on the floor.