Rheumatoid Arthritis Is Distinguished from Osteoarthritis in That

Rheumatoid arthritis is distinguished from osteoarthritis in that:

A) Rheumatoid arthritis is an autoimmune, systemic disease; osteoarthritis is a degenerative disease of the joints.
B) Rheumatoid arthritis is an autoimmune, degenerative disease; osteoarthritis is a systemic inflammatory disease.
C) People with osteoarthritis are considered to be genetically predisposed; there is no known genetic component to rheumatoid arthritis.
D) Osteoarthritis is often caused by a virus; viruses play no part in the pathogenesis of rheumatoid arthritis.