Consider the following statements.
I. In ${\mathrm{F}}_2$ molecule F-F$\mathrm{\sigma }$-bond is formed by axial overlapping of two p-orbitals.

Il. In ${\mathrm{O}}_2$ molecule one $\mathrm{\sigma }$-bond is formed by axial overlap of p-orbitals and one $\mathrm{\pi }$-bond is formed by lateral overlap of p-orbitals.
III. In ${\mathrm{N}}_2$ molecule one $\mathrm{\sigma }$ and two $\mathrm{\pi }$-bonds, i.e. all the three bonds ate formed by lateral overlap of p-orbitals.
Which of the above statements are incorrect?