Which of the following statements best describes associations? Select one: a. Associations are a "kind-of" relationship. b. A superclass is a class that does not have any associations. C. All operations defined in a superclass are inherited by the subclass. d. Generalization of associations allows abstracting common features and defining them in a subclass. In a UML diagram for a competitive game, which of the following statements best describes the game state? Select one: a. State is represented as an attribute. b. State of an object cannot be represented. c. State is irrelevant to the class being shown. d. State is represented as a result of an operation