If a class implements an interface, it must ____.

A) provide definitions for each of the methods of the interface
B) override all constants from the interface
C) rename all the methods in the interface
D) override all variables from the interface

When a class implements an interface, it must provide definitions (implementations) for each of the methods of the interface. This is a requirement for implementing an interface in Java. Constants, variables, and method names from the interface can be used as they are in the implementing class, but they don't need to be renamed or overridden.