Solution:
Option (ii) is the answer.
(A)
Iodine undergoes oxidation, transitioning from the -1 oxidation state to the 0 oxidation state. As a result, H2O2 works as an oxidising agent and undergoes a reduction process.
(B)
The oxidation state of chlorine is changed from +1 to -1 during the reduction process. As a result, H2O2 serves as a reducing agent while also becoming oxidised.