Which one of the following is NOT the good example of asking for clarification politely?

A. “Am I right in thinking that what you’re meaning by that is…”
B. “I’m not sure that I agree with that…”
C. “I think I need more information because I’m not fully understanding the part that you were saying about…”
D. “I don’t think I fully understand what you were saying about… Could you tell me a bit more?”