What Is an Age-Related Change in the Musculoskeletal System of an Older

What is an age-related change in the musculoskeletal system of an older person?

A) Pain when ambulating due to increased bone mass.
B) Decreased bone mass and calcium absorption, which lead to an increased risk of fractures.
C) Vertebrae lengthen and thin, which leads to increased bone production.
D) Difficulty with dexterity after age 50.