In 1865, Kekulé proposed a ring arrangement for benzene, $\text{C}_6\text{H}_6$, with one hydrogen atom bonded to each carbon atom. Under this arrangement, every bond stays in the positions indicated. If benzene really had this structure, how many isomers of dichlorobenzene, $\text{C}_6\text{H}_4\text{Cl}_2$, would there be?
- A3
- B4
- C5
- D6