Page 1263 - AP Computer Science A, 7th edition

37. (D) Statement I is false: An abstract class may have no abstract methods. The point about an abstract class is that it represents an abstract concept, and no instance of it will ever be created. The only instances that will be created are instances of its subclasses. Statement II must be true, since you are told the abstract class is actually used in the program. Statement III is true because an abstract class cannot be instantiated.