Metallic oxides which on treatment with dilute acids produce hydrogen peroxide are called peroxides.
All peroxides contain a peroxide ion (O2)2–having the structure –O–O– . PbO2 does not contain a peroxide ion (O2)2− and it can not be called as peroxides.
PbO2 contains O2− ions and Option (A) Pb is +4, whereas (B), (C) and (D) contains [O–O]2− ions (peroxide ions). Thus Option A is correct.