Visual Puzzle: Who Will Fall First?

Worker A (standing on the broken wooden plank): He will fall first. The plank beneath his feet has completely broken in the middle, suspended only by ropes at both ends. His body weight is pressing directly on the fracture point, so this fragile support could collapse at any moment. Worker B (on the ladder): Although the ladder is tilting slightly, it is still supported by a solid wall, and the side of the ladder he is stepping on is perfectly intact. Worker C (on the rope): He is currently holding tightly to a securely tied rope above him, and there is no sign of the rope slipping off for the time being. Worker D (sitting on the scaffolding): He is sitting on the scaffolding, and the wooden plank beneath him appears to be quite stable at the moment.