In a class diagram there is a Person class and an Automobile class. The association between them is named "owns". The multiplicity on the Person end of the association is 1, and the multiplicity on the Automobile end is *. In the absence of any constraints, the collection of automobiles owned by one person would be regarded as: 5. a. b. c. A set A hashmap None of the above In the class diagram mentioned in 5, there is also a class named Shop, and an association named "maintains" between Shop and Automobile. The multiplicities on both ends of this association are *. Which of the following would be acceptable? 6. a. Making the "owns" relationship a composition, with the diamond on the Person end b. Making the "owns" relationship an aggregation, with the diamond on the Person end C. None-they're all bad 7. Which of the following statements is true about the "realizes" relationship? a. b. c. d. It connects interfaces to classes It may be represented as a dashed line with a triangle on the interface end It may be represented using the ball and socket notation All of the above statements are true