This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which is not a S/E of Cimetidine ? 
Select and explain. 
A. Impotence, B. Gynaecomastia, C. Atrophic gastritis, D. Galactorrhea
C: Atrophic gastritis
Answer: C: Atrophic gastritis 
Explanation: Ans. is 'c' i.e., Atrophic gastritis