This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure of DNA, Subject name: Biochemistry
[{'content': 'DNA model described by Watson and crick was? \nSelect and explain. \nA. Right handed parallel, B. Left handed anti parallel, C. Right handed anti parallel, D. Left handed parallel', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) Right handed anti parallelRef Lippincott's 4/e, chapter 29", 'role': 'assistant'}]