The diagram illustrates a section of a DNA molecule. Which row correctly names the structures labelled 1, 2, 3 and 4?
- A1 cytosine; 2 phosphate; 3 guanine; 4 deoxyribose sugar
- B1 deoxyribose sugar; 2 phosphate; 3 adenine; 4 cytosine
- C1 deoxyribose sugar; 2 phosphate; 3 cytosine; 4 thymine
- D1 phosphate; 2 deoxyribose sugar; 3 cytosine; 4 adenine