You arrive at the aircraft and you find the automatic pressure controller is inoperative. This item is a category A item in the minimum equipment list (MEL. If you defer the maintenance on the this component on 6/18/18 at 1pm (1800) when will the MEl expire? Question 24 options: expires at 1201am on the 21th expires at 6pm (1800) on the 28th expires at 6pm (1800) on the 21st shall be repaired within the time interval specified in the remarks column of the operator's approved MEL