Which of the following statements regarding abstract methods is false?

a. Abstract classes have constructors.
b. A class that contains abstract methods must be abstract.
c. It is possible to declare an abstract class that contains no abstract methods.
d. An abstract method cannot be contained in a nonabstract class.
e. A data field can be declared abstract.

e E is wrong, because a data field cannot be declared abstract. Only methods and classes can be declared abstract.