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: Biochemistry
[{'content': 'Number of double bonds in arachidonic acid is \nSelect and explain. \nA. 1, B. 2, C. 3, D. 4', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Arachidonic acid (20C)D5,8,11,14-all Timnodonic acid', 'role': 'assistant'}]