Betty is standing underneath a large sign at a train station in Kansas City waiting to board a train. While she is patiently waiting, a construction crane across the street drops a heavy wrecking ball on the ground which causes severe vibrations of the ground in the immediate vicinity. The vibrations cause the sign hanging above Betty's head to fall, and it lands on top of her and causes significant damage to her foot. If she later decides to sue the Kansas City train station for the injury sffe suffered when its sign fell on her foot, why would Betty be most likely to lose her lawsuit?

The train station is subject to a common carrier exception that makes public transportation immune from lawsuits like this.

The train station sign was not the actual cause of Betty's injuries.

The train station owes no duty to Betty as a passenger on its railway.

The cause of the injury was too remote to hold the train station liable.

The train station did not intentionally injure Betty.