Which of the Following Statements Is False

Which of the following statements is false

A) Set and Get methods can validate attempts to modify private data and control how that data is presented to the caller, respectively.
B) If an instance variable were public, any client of the class could see the data and modify it, including setting it to an invalid value.
C) public data allows client-code programmers to write code that depends on the class's data format. If the class's owner changes that format, any client code dependent on it would "break" and would need to be adjusted to the new format, making it subject to break again.
D) All of the above are true.