$$The mere fact that event data appear on a prenumbered document is no proof of the validity of the event. Someone intent on defrauding a system by introducing a fictitious event probably would be clever enough to get access to the prenumbered documents or would replicate those documents to make the event appear genuine.$$

Do you agree with this comment? Why or why not?

Without prejudice to your answer to part $($a$),$ assume that the comment is true. Present $($and explain$)$ a $$statement of relationship$$ between the control plan of using prenumbered documents and the information system control goal of event validity.