$\mathrm{NH_3}$ and HCN combine to make $\mathrm{NH_4CN}$, which is an ionic compound. Which row gives the number of coordinate bonds and the number of $\pi$ bonds in one formula unit of $\mathrm{NH_4CN}$?
- Anumber of coordinate bonds = 0, number of $\pi$ bonds = 2
- Bnumber of coordinate bonds = 1, number of $\pi$ bonds = 2
- Cnumber of coordinate bonds = 0, number of $\pi$ bonds = 3
- Dnumber of coordinate bonds = 1, number of $\pi$ bonds = 3