The correct option is B Rheumatoid arthritis
An autoimmune disease is one in which the body's immune system mistakenly attacks the normal cells. In Rheumatoid arthritis, the immune system attacks the lining of the joints. This leads to inflammation that can affect the entire body. Rheumatoid arthritis causes the normally thin synovial membrane to become inflamed and thickened leading to an accumulation of synovial fluid and causing pain and swelling.
Therefore, the correct answer is option D.