Which of the Following Is True About the Required Notice

Which of the following is true about the required notice for shareholders' meetings?

A) The notice can be oral or written,but is required only for special meetings.
B) The notice can be oral or written and is required for both regular and special meetings.
C) The notice must be written,but is required only for special meetings.
D) The notice must be written and is required for both regular and special meetings.
E) The notice must be written,but is required only when unusual items will be on the agenda of the meeting.