Jack was a manager of a vegetable shop. One of his customer Jill fell down and got hurt since the floor was wet although there was a sign that shows - 'the floor is wet and be care of your steps'. . As a result, Jill could not go to work for two weeks and spent $1000 for treatment. Now Jill raised this issue to the court. Please answer the following questions:

1. What Jill needs to prove to the court to get remedy?

2. What defences Jack can prove ?