45 y/o Heather has loved to sew all her life. However, she has noted that her fingers are beginning to sway outward, making it difficult to hold a needle and thread. Her joints also hurt. The doctor examined Heather and noted that she has inflammation in the lining of the joints, pain and swelling. The doctor explained to Heather that she has an autoimmune process and her diagnosis is__________________________.

A. Osteoporosis

B. Osteoarthritis

C. Rheumatoid arthritis

D. Normal aging