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': 'All of the following are ture regarding cephalosporins except - \nSelect and explain. \nA. Bactericidal agents, B. Active against only gram negative bacteria, C. IIIrd generation are resistant to beta-lactamases from gram negative bacteria, D. Ceftriaxone is administered parenterally', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Active against olny gram negative bacteria Cephalosporins are active against gram positive as well as gram negative bacteria, and are bactericidal. o Ceftriaxone is a parentral cephalosporin. o Third generation cephalosporins are highly resistant to beta-lactamases from gram negative bacteria.", 'role': 'assistant'}]