Why Do Women Experience the Symptoms of Osteoporosis More Acutely

Why do women experience the symptoms of osteoporosis more acutely than men?

A) Women have less bone mass and produce less estrogen later in life; these factors accelerate calcium loss.
B) Women have less muscle mass and don't exercise as much.
C) Men don't produce estrogen, so they don't rely on it as much as women do.
D) Men take in more calcium in their diet, so they can't get osteoporosis.