Chang Has a Habit of Scratching His Head in Anxiety

Chang has a habit of scratching his head in anxiety whenever he meets his clients. Four other colleagues-David, Peter, Sophie, and Jones-are with him. He would feel more comfortable with

A) David, who mimics Chang's behavior and scratches his head while speaking.
B) Peter, who frowns at him while he observes him scratching his head.
C) Sophie, who smiles at him every time he scratches his head.
D) Jones, who has no reaction to Chang's behavior.