This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Pharmacology
H2 blockers are given for duodenal ulcer for a period of? 
Select and explain. 
A. 4 weeks, B. 6 weeks, C. 8 weeks, D. 12 weeks
C: 8 weeks
Answer: C: 8 weeks 
Explanation: Ans. (c) 8 weeksRef Mayo clinic gastroenterology and hepatology Board review edited by Stephen hauser 4/e, p 13, Pharmacologyby George M. Brenner, Craig stevens, 4/e, p 297