A nurse is assessing an older adult client who is experiencing age-related changes. Which findings should the nurse expect?

A. Calcium storage in bones decreases with age, contributing to conditions like osteoporosis. B. Joint stiffness is a common age-related change due to decreased flexibility and wear on the joints. C. Muscle mass typically decreases with age, known as sarcopenia. D. Balance tends to decrease with age due to changes in muscle strength, coordination, and sensory function.