Among the eight cars that a dealer has in his show-room, Car 1 is new And has air- conditioning, power steering, And bucket seats; Car 2 is one year old And has air-conditioning, but neither power steering nor bucket seats; Car 3 is two years old And has air- conditioning And power steering, but no bucket seats; Car 4 is three years old And has air- conditioning, but neither power steering nor bucket seats; Car 5 is new And has no air- conditioning, no power steering, And no bucket seats; Car 6 is one year old And has power steering, but neither air- conditioning nor bucket seats; Car 7 is two years old And has no air-conditioning, And has no air-conditioning, no power steering, And no bucket seats; And Car 8 is three years old, And has no air- conditioning, but has power steering as well as bucket seats. If a customer buys one of these cars And the event that he chooses a new car, for example, is represented by the set {Car 1, Car 5}, indicate similarly the sets that represent the events that
(a) He chooses a car without air-conditioning;
(b) He chooses a car without power steering;
(c) He chooses a car with bucket seats;
(d) He chooses a car that is either two or three years old.