Which Elements Are Changing Oxidation States in the Following Reaction $\rarr$

Multiple Choice

Which elements are changing oxidation states in the following reaction?
Zn(s) + 2 MnO₂(s) + H₂O(l) $\rarr$ Zn(OH) ₂(s) + Mn₂O₃(s)

A) Zn, O
B) Mn, Zn
C) H, Mn
D) O, Mn
E) H, O