Write a balanced half-reaction for the reduction of hydrogen peroxide to water in an acidic solution.
a. 2H2O2(l) + 2e- --> 2 H2O (l) + O2(g)
b. H2O2(l) + 4H+(aq) + 2e- --> 2H2O(l) + H2(g)
c. H2O2 (l) + 2H+(aq) + 4e- --> 2H2(g) + O2(g)
d. H2O2(l) + 2H+(aq) + 2e- --> 2H2O(l)
e. 2 H2O2(l) ---> 2 H2O(l) + O2(g)