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 of the following is NOT true about penicillins ? 
Select and explain. 
A. Penicillin V is absorbed orally, B. Benzathine penicillin is short acting penicillin, C. Cloxacillin is β–lactamase and acid resistant, D. Ampicillin is not resistant to β–lactamases
B: Benzathine penicillin is short acting penicillin
Answer: B: Benzathine penicillin is short acting penicillin 
Explanation: None