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
[{'content': 'Ceftriaxone is : \nSelect and explain. \nA. IInd generation short acting cephalosporin, B. Has activity against beta lactamase producing bacteria, C. IVth generation long acting cephalosporin, D. Illrd generation long acting cephalosporin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]