Match column I (species) with column II ( type of silicate/structure)

	column I		column II
A	${\mathrm{SiO}}_4^{-4}$	I	cyclic structure
B	SiO2	II	2-dimensional sheet structure
C	${\mathrm{Si}}_3{\mathrm{O}}_9^{-6}$	III	ortho siliocate
D	${\left({\mathrm{Si}}_2{\mathrm{O}}_5^{-2}\right)}_{\mathrm{n}}$	IV	3-dimensional network
		V	chain structure