Given below are two statements:
Statement (I): \( \mathrm{SiO_{2}} \) and \( \mathrm{GeO_{2}} \) are acidic while \( \mathrm{SnO} \) and \( \mathrm{PbO} \) are amphoteric in nature.
Statement (II): Allotropic forms of carbon are due to property of catenation and \( p\pi - d\pi \) bond formation.
In the light of the above statements, choose the most appropriate answer from the options given below:
