Which of these clients is at greatest risk for the complications associated with osteoporosis?

C A 70-year-old postmenopausal woman who has limited mobility due to rheumatoid arthritis, for which she takes corticosteroids, and who drinks a bottle of wine by herself each evening D A 70-year-old woman who takes estrogen therapy, was very athletic in her youth playing tennis and golf, and takes anticonvulsant therapy as a result of a head injury suffered in an auto accident three years ago A A 22-year-old woman with anorexia nervosa who is not having menstrual periods B A 65-year-old Asian-American man who is sedentary, has a low calcium intake, and takes corticosteroids for chronic obstructive pulmonary disease