For the reaction:

2H2O2 ???? 2H2O + O2
the proposed mechanism is:

H2O2 + I?????H2O+IO? step 1

H2O2 + IO? ???? H2O + O2 + I? step 2

which of the following is correct

A. Both I? and IO? are catalysts.
B. I? is a catalyst and IO? is a reactionintermediate.

C. Both I? and IO? are reactionintermediates.
D. IO? is a catalyst and I? is a reactionintermediate.E. There are no catalysts or reactionintermediates.