Each of the eight species listed below contains covalent bonds. In which pair are the species shaped differently from one another?
- A$\text{BeCl}_2$ and $\text{CO}_2$
- B$\text{CH}_4$ and $\text{NH}_4^+$
- C$\text{NH}_3$ and $\text{BF}_3$
- D$\text{SCl}_2$ and $\text{H}_2\text{O}$