A Patient Whose Work Involves Lifting Has a History of Chronic

A patient whose work involves lifting has a history of chronic back pain. After the nurse has taught the patient about correct body mechanics, which patient statement indicates that the teaching has been effective?

A) "I plan to start doing exercises to strengthen the muscles of my back."
B) "I will try to sleep with my hips and knees extended to prevent back strain."
C) "I can tell my boss that I need to change to a job where I can work at a desk."
D) "I will keep my back straight when I need to lift anything higher than my waist."