This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Molecular Genetics, Subject name: Biochemistry
[{'content': 'Which form of DNA is predominantly seen in our body? \nSelect and explain. \nA. A, B. C, C. B, D. Z', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. B-DNA(Ref: Harper 31/e page 340)Physiologically most common is B-DNA.QUnder low salt and high degree of hydration B DNA is usually foundUnder high salt concentration and low degree of hydration A-DNA is usually found.The distance spanned by one turn of B-DNA is 3.4nm (34Adeg)The width of the double helix in B-DNA is 2nm (20Adeg)', 'role': 'assistant'}]