Given below are two statements: Statement I: The number of species among SF_4, NH_4^+,[ NiCl_4]^2-, XeF_4,[ PtCl_4]^2-, SeF_4 and [ Ni ( CN )_4]^2-,…

Given below are two statements : Statement I : The number of species among $\displaystyle \mathrm{SF}_4, \mathrm{NH}_4^{+},\left[\mathrm{NiCl}_4\right]^{2-}, \mathrm{XeF}_4,\left[\mathrm{PtCl}_4\right]^{2-}, \mathrm{SeF}_4$ and $\displaystyle \left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$, that have tetrahedral geometry is $\displaystyle 3$ . Statement II : In the set $\displaystyle \left[\mathrm{NO}_2, \mathrm{BeH}_2, \mathrm{BF}_3, \mathrm{AlCl}_3\right]$, 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 :