In Louise's Speech About Various Golf Grips and Strokes,Louise Used

In Louise's speech about various golf grips and strokes,Louise used several golf clubs and demonstrated the moves herself.According to your textbook's guidelines on the use of presentation aids,was this a good technique?

A) Yes; a speaker can serve as a presentation aid to demonstrate how something works or is done.
B) Yes,but only if other objects or charts are used in conjunction with the speaker's demonstration.
C) No; Louise should have used someone else to demonstrate,so that she could keep speaking.
D) No; demonstrations like this are distracting and too informal for a public speech.