<s>[INST] context: Tarsometatarsal The 1987 Revised Criteria for the Rheumatoid ahritis 4 out of 7 criteria are required to classify a patient as having rheumatoid ahritis Patients with 2 or more clinical diagnoses are not excluded. 1.Morning stiffness: morning stiffness in and around joints lasting at least 1 hour before maximal improvement 2.Ahritis of 3 or more joint areas: soft tissue swelling (ahritis) of 3 or more joint areas observed simultaneously by a physician. The 14 possible joint areas involved are, right or left: - proximal interphalangeal metacarpophalangeal wrist elbow knee - ankle metatarsophalangeal Ahritis of hand joints: swelling (ahritis) of the proximal interphalangeal, metacarpophalangeal, or wrist joints Symmetric ahritis: simultaneous involvement of the same joint areas on both sides of the body Rheumatoid nodules: subcutaneous nodules over bony prominences, extensor surfaces, or juxtaaicular regions Serum rheumatoid factor: demonstration of abnormal amounts of serum rheumatoid factor Radiographic changes: radiographic erosions and/or periaicular osteopenia in hand and/or wrist joints Criteria 1 to 4 must be present, for at least 6 weeks. Criteria 2 to 5 must be observed by a physician. [/INST] question: Joint not involved in Rheumatoid ahritis according to 1987 modified ARA criteria? | options: A: Knee B: Ankle C: Tarsometatarsal D: Met at arsophalangeal | answer: C </s>