Two strands of DNA are held together by hydrogen bonds between complementary base pairs. Which row in the table correctly identifies the base pair and the number of hydrogen bonds between them?
| Row | Base 1 | Base 2 | Number of hydrogen bonds |
|---|---|---|---|
| A | guanine | cytosine | 2 |
| B | adenine | thymine | 3 |
| C | adenine | thymine | 2 |
| D | cytosine | thymine | 3 |
Row A
Row B
Row C
Row D
