Which of the Following Responses Most Clearly Illustrates the Feedback

Which of the following responses most clearly illustrates the feedback technique of confrontation?

A) "A number of things can cause vomiting. We don't have enough information yet to determine what might be the cause in your situation."
B) "I'm not sure I understand what you mean by 'feeling sick.'"
C) "So first you vomited, then you began having abdominal pain?"
D) "You said you aren't having any pain, but I notice you keep holding your stomach."