Which of the Following Is a Guideline for Speaking with Someone

Which of the following is a guideline for speaking with someone who has a speech or language disorder?

A) Finish their sentences, granted you know what they will say next.
B) Say, "slow down," or "relax" if they're having an especially difficult time.
C) Ask for clarification as needed.
D) If they are having difficulty, it is okay to seem uninterested or avoid eye contact.