Sam has been spending a lot of time at crew practuce. Which of the following statements shows goes Sam's girlfriend could be a negative influence?

A. "We never get to have fun any more. Do you really want to stay on the team?"
B. "Make sure you don't overexerct yourself. I've noticed you are really tired each day."
C. "Did you remember to stretch? That might be why your arms hurt after the race."
D. "Try to keep a moderate pace instead of pushing to win. Your health is more important."