6 A 1 1 1 10 10 10 10 10 10 10 10 10 10 10 T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T F T T T T T T T F T F