The therapeutic effect of sulfasalazine in ulcerative colitis is exerted by :: (A) Inhibitory action of the unabsorbed drug on the abnormal colonic flora, (B) Breakdown of the drug in colon to release 5–amino-salicylic acid which suppresses inflammation locally, (C) Release of sulfapyridine having antibacterial property, (D) Systemic immunomodulatory action of the drug
Answer is B. None