This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
False about vaccine is - 
Select and explain. 
A. Thiomersal is preservative in DPT vaccine, B. Kanamycin is preservative in measles, C. Magnesium chloride stabilizer used in OPV, D. Neomycin is a preservative in BCG vaccine
D: Neomycin is a preservative in BCG vaccine
Answer: D: Neomycin is a preservative in BCG vaccine 
Explanation: BCG is the only widely used live bacterial vaccine. The WHO has recommended the 'Danish 1331' strain for production of the vaccine. There are 2 forms- Fresh(liquid) and freeze-dried. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 213