The correct option is A Atropa belladonna
'Belladonna' is an extract of Atropa belladona. Atropa belladonna is a perennial herbaceous plant in the family Solanaceae, native to Europe, north Africa, western Asia, and some parts of Canada and the United States. 'Belladonna' produces many effects in the body, including relief from spasms of the gastrointestinal tract (stomach and intestines) the bladder and the biliary tract. This is helpful in controlling conditions, such as colitis, spastic bladder, diverticulitis, infant colic, renal and biliary colic, peptic ulcer and irritable bowel syndrome. Belladonna also reduces the secretions of many organs, thereby helping to control conditions, such as excessive stomach acid production. Thus, the correct answer is option A.