Chromosomes, genes and proteins — practice question

The diagram illustrates the bases in a section of DNA from only one strand. A-C-T-T-C-A-G-T-C. What base sequence would be found on the complementary DNA strand?

• AG-C-T-T-C-G-A-T-C
• BG-T-C-C-T-G-A-C-T
• CT-C-A-A-C-T-G-A-C
• DT-G-A-A-G-T-C-A-G