This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anaesthesia
[{'content': 'False about ropivacaine \nSelect and explain. \nA. Less cardiotoxic than bupivacaine, B. More cardiotoxic than lignocaine, C. Contains only R enantiomer, D. Onset of action is faster than bupivacaine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ropivacaine contains only S enantiomer so cardiotoxicity is less than bupivacaine (but still higher than lignocaine). Anaesthetic propeies (onset, intensity; duration of I action) of ropivacaine are almost similar to bupivacaine.', 'role': 'assistant'}]