Explain what this program is doing

Which of the following statements is false? a. package access is rarely used. b. use the access modifier package to give a method or variable package access. c. classes in the same source file are part of the same package. d. if a program uses multiple classes from the same package, these classes can access each other's package access members directly through references to objects of the appropriate classes, or in the case of static members, through the class name.