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
All of the following are true about Penicillins except? 
Select and explain. 
A. Penicillin V is acid stable, can be given orally, B. Probenecid increases the duration of action by penicillins, C. Benzathine penicillin is used in the treatment of Neurosyphilis, D. Penicllin V acts mainly on gram +ve micro organisms
C: Benzathine penicillin is used in the treatment of Neurosyphilis
Answer: C: Benzathine penicillin is used in the treatment of Neurosyphilis 
Explanation: Aqueous penicillin can cross BBB and hence it is the drug of choice in patients of neurosyphilis.