The answers are B, E, and F.
Fonts should be appropriate for your audience.
Select font sizes that are appropriate for your delivery method.
Use font colors that work well with your background.
Be consistent and follow one uniform background, text color, text font and size throughout your presentation. It makes it easier for the audience to consistently follow the flow of your ideas. Use color and contrast. It is easier to read dark text on a light background. Bottom line is, do not include anything that makes you announce, “Can everyone read this?”