For the following question, arrange the sentences A, B, C, and D to form a logical sequence.
(A) Your doctor will never send you to the drugstore for a pack of cigarettes but she might recommend 'the patch'-the same remedy smokers use to wean themselves off cigarettes.
(B) Worn on the skin, the patch releases enough nicotine into the bloodstream to curb colitis woes like severe diarrhea.
(C) Not even nicotine is all bad.
(D) It may soothe symptoms of ulcerative colitis, a digestive disease, according to a study.