Peptic ulcers are caused by –
(A) a **, Candida albicans
(B) a virus, cytomegalovirus
(C) a parasite, Trypanosoma brucei
(D) a bacterium, Helicobacter pylori
Correct :-(D) a bacterium, Helicobacter pylori
Explanation :-
Peptic ulcer is mucosal erosion equal to or greater than 0.5 cm of GIT. 70 - 90% of peptic ulcer are associated with helicobacter pylori spiral shaped bacterium that lives in the acidic environment of stomach.