Which Individual Would Be at the Lowest Risk for Osteoporosis

Which individual would be at the lowest risk for osteoporosis?

A) Joe, who walks for 1 hour, 3 times each week
B) Jill, who has a glass of wine every day after work
C) Stephanie, whose mother and grandmother broke their hips
D) Mark, who had a kidney transplant 2 years ago
E) Rachel, who has athletic amenorrhea