In which situation is a hotel least likely to be liable for negligence?

A. Where a hotel guest slips on a wet floor, even though the hotel posted a sign warning about the wet floor B. Where a hotel employee slaps a neighborhood child he caught sneaking into the hotel swimming pool C. Where a local tour guide (not a hotel employee or guest) slips on a wet floor while passing out coupons in the hotel lobby, even though the hotel posted a sign warning about the wet floor D. Where a hotel guest's child is injured on a pool slide that did not have a sign warning people that it was broken