The table below shows data that the chemistry department collects about appointments for using the NMR magnets. Assume that one principal investigator(PI) can have many grants but a grant has only one PI Using these data, comment on the appropriateness of the following designs: 1- APPOINTMENT(GrantNum, PI, PI email, MagnetID, MagnetLocation, Date, Start, End, User, UserJobTitle) 2. APPOINTMENT(GrantNum, PI, PI email, MagnetID, MagnetLocation, Date, Start, End, User. UserJobTitle) 3. APPOINTMENT(GrantNum, PI, PI email, MagnetID, MagnetLocation, Date, Start, End, User, UserJobTitle) 4. APPOINTMENT(GrantNum, PI, PI_email, MagnetIITMagnetLocation, Date, Start, End, User. UserJobTitle) 5. APPOINTMENT(GrantNum, PL, PI email, MagnetID, MagnetLocation, Date, Start, End, User, UserJobTitle) 6- APPOINTMENT(GrantNum, MagnetID, MagnetLocation, Date, Start, End, User, UserJobTitle)