Match Column-I with Column-II

Column-I	Column-II
A) ${\mathrm{CaOCl}}_2$ (Oxidation number of Cl)	q) +1, -1
B) ${\mathrm{S}}_2{\mathrm{O}}_3^{2-}$ (Oxidation number of S)	p) +6, +6
C) ${\mathrm{NH}}_4 {\mathrm{NO}}_3$ (Oxidation number of N)	r) -3, +5
D)${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7,{\mathrm{K}}_2{\mathrm{CrO}}_4$ (Oxidation number of Cr)	s) -2, +6