The correct statement with regard to the secondary structure of DNA/RNA is

1. A. DNA possesses a double strand helix structure and contains thymine as one of the four bases
2. B. DNA possesses a single strand helix structure and contains uracil as one of the four bases
3. C. RNA possesses a double strand helix structure and contains uracil as one of the four bases
4. D. RNA possesses a single strand helix structure and contains thymine as one of the four bases

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