Which of the Following Is/are True Regarding Organizational Devices in (Oral)

Which of the following is/are true regarding organizational devices in (oral) presentations? Select all that apply.

A) Organizational devices should appear directly in PowerPoint slides.
B) Audience members have less ability to reorient themselves if they get lost in a presentation.
C) Organizational devices are at least as important in presentations as in papers.
D) Organizational devices in presentations are too important to be oral; they must be written down, too.