This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Diluent for trimethoprim in antibiotic disc for sensitivity testing is 
Select and explain. 
A. Na OH solution, B. Na hco3, C. Ethanol, D. Acetic acid
D: Acetic acid
Answer: D: Acetic acid 
Explanation: Diluent for trimethoprim in antibiotic sensitivity testing is acetic acid Sod bicarbonate for amoxicillin and ceftazidime Ref: Textbook of Microbiology Baveja 4th ed Pg 629