You created a meeting for next Tuesday at 2 PM, and several invitees have accepted. How do you change the meeting so it will begin at 1 PM and last for one hour?

A. Open the calendar in Day, Week, or Work Week view. Drag the start time to 1 PM and send an update
B. Double click the meeting to open it, change the start time to 1 PM abd send an update
C. Some people have already accepted, so you must cancel this meeting and create a new meeting