Given below are two statements :
Statement I : The number of species among $\mathrm{SF}_4, \mathrm{NH}_4^{+},\left[\mathrm{NiCl}_4\right]^{2-}, \mathrm{XeF}_4,\left[\mathrm{PiCl}_4\right]^{2-}, \mathrm{SeF}_4$ and $\left.[\mathrm{NiCN})_4\right]^{2-}$, that have tetrahedral geometry is 3 .
Statement II: In the set $\left[\mathrm{NO}_2, \mathrm{BeH}_2, \mathrm{BF}_3, \mathrm{AlCl}_3\right]$, all the molecules have incomplete octet around central atom. In the light of the above statements, choose the correct answer from the options given below: