Explain each statement, why wrong/right

Documentation and testing Verification gives stronger proof of correctness than validation Unit testing should only test common input cases Unit testing is a type of verification All java classes implementing ADTs should have a main method All programs/classes should have a README file which clearly describes what the program/class does, how it is implemented, how it is used, whom wrote the code and bug fixes Unit testing is a form of validation Validation gives stronger proof of correctness than verification Unit testing should if possible test all potential inputs The main method of a class should perform extensive unit testing of the class unless it is the class driving the execution of a program