In which pair is the bond angle in the first species less than the smallest bond angle in the second species?
- A$\text{CH}_4$ and $\text{SF}_6$
- B$\text{CO}_2$ and $\text{BF}_3$
- C$\text{H}_2\text{O}$ and $\text{H}_3\text{O}^+$
- D$\text{NH}_4^+$ and $\text{NH}_3$