Which of the following is not an extra articular feature of Rheumatoid arthritis?

Ans. is 'd' i.e., Proteinuria Extra-articular manifestations in RA1) Systemic manifestations: Fever, weight loss, fatigue.2) Dermatological: Subcutaneous nodule.3) Cardio-pulmonary: Pericardial & pleural effusion, constrictive pericarditis, pulmonary fibrosis, lung nodules.4) Eye: Sjogren syndrome (Keratoconjunctivitis sicca), scleritis.5) Nervous: Carpal tunnel syndrome, tarsal tunnel syndrome, mononeuritis multiplex