Given below are two statements: Statement I: The number of species among BF_4^-, SiF_4, XeF_4 and SF_4, that have unequal E-F bond lengths is two.…

Given below are two statements: Statement I: The number of species among $\displaystyle \mathrm{BF}_4{ }^{-}, \mathrm{SiF}_4, \mathrm{XeF}_4$ and $\displaystyle \mathrm{SF}_4$, that have unequal E-F bond lengths is two. Here, E is the central atom.Statement II: Among $\displaystyle \mathrm{O}_2{ }^{-}, \mathrm{O}_2{ }^{2-}, \mathrm{F}_2$ and $\displaystyle \mathrm{O}_2{ }^{+}, \mathrm{O}_2{ }^{-}$has the highest bond order. In the light of the above statements, choose the correct answer from the options given below