a 65 year old patient comes into your office complaining that she frequently feels weak and dizzy. Additionally, she notes that her tongue is swelling and that she has recently begun to experience excessive weight loss. Physical examination findings include postive Rombergs and Babinski signs. which of the following labratory results would confirm the most likely diagnosis? A. high red cell distribution width, B. cellulose acetate and citrate agar gel electrophoresis, C. anti-intrinsic factor and anti-parietal cell antibodies, D. decrease mean corpuscular volume