Which of the following statements is NOT correct in terms of language appropriateness in presentation.

A．Avoid using any offensive terms in your presentation such as “fat”, “stupid”, etc.
B．In some formal settings, such as academic presentations, you might want to use more formal words than informal expressions.
C．If your audience do not have professional knowledge, you’d better paraphrase the technical terms with general terms, or add translation to the technical terms.
D．You may choose formal or informal words in presentation according to your own preference.