Arrange the following elements in descending order of their contribution to percentage weight of the human body. (a) Oxygen (b) Carbon (c) Hydrogen (d) Nitrogen Choose the correct answer from the options given below :

1. A. (a), (b), (c), (d)
2. B. (c), (a), (b), (d)
3. C. (b), (c), (d), (a)
4. D. (b), (a), (c), (d)

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