What keyword is used to undo the changes that were made during a transaction?

Overriding a method differs from overloading a method because:

a. Overloaded methods have the same signature. b. Overridden methods have the same signature. c. Both of the above. d. Neither of the above.

Which of the following is a character encoding system?

a. FontTab b. HTML c. CSS d. WYSIWYG e. Unicode