Java -- Object Orientated Programming And Data Abstraction

1 Which of the following is false about Abstract classes? Can choose multiple answers for #1 a.Abstract Classes must implement all methods of an Implemented Interface b. Abstract classes cannot be instantiated C Abstract classes can have non-Abstract children classes d. Abstract classes cannot inherit from other Abstract Class .Abstract Class cannot inherit from a regular, non-Abstract class 2 Which of the following is false about Interfaces? O a. Interfaces cannot be instantiated under any circumstances O b. Interfaces contain only abstract methods O c. Interfaces can act as a "super-type for several unrelated objects, as long as they all implement the same interface O d. We can assign an interface implementing object to a reference that is of the Interface type What is the purpose of an Abstract Class? a. To provide a vague definition or some class hat can be used as a basis to define several other O b.To provide a blue print for creating Abstract objects 3 a s ract and concrete classes c. All of the above O d. To mandate that many, possibly unrelated classes, exhibit the same behavior and tie them together with a common Type