Written records associated with the maintenance and calibration of equipment need to include the date of the operation, a verification that the SOP was followed, and a verification that the operation performed followed the routine procedure. What else is required if the operation was not routine $($for example, if the equipment was found damaged by the user$)?$

The name and title of the person who last used the equipment.

The identification of the equipment and its model number.

The nature of the defect, when discovered, and any remedial action taken.

All of the above