Janey, 25 Years Old, May Experience Arthritis Differently Than 65-Year-Old

Janey, 25 years old, may experience arthritis differently than 65-year-old Mrs.Johnson because:

A) The body undergoes physiological changes with aging.
B) A healthy body does not experience significant changes as one gets older.
C) Older patients do not feel any systemic symptoms, such as malaise and weight loss.
D) Even though the same joints are usually affected, age makes it feel different.