A client who has been using crutches at home for t week reports that he is having trouble using the crutches because his armpits hurt and his fingers tingle. What would be the nurse’s most appropriate response（）
A. "You need to do more arm exercises. It sounds like your muscles need strengthening. "
B. "That’s normal. As you adjust to the crutches, the discomfort will diminish. "
C. "Be sure to take your pain medication before ambulating. That will help your discomfort. "
D. "Let me watch you ambulate. Your crutches or technique may need some adjustment. "