Which of the following equations is balanced correctly?

I. 2 Ag2O → 4 Ag + O2


II. Cu + H2O → CuO + H2


III. Zn + HCl → ZnCl2 + H2


IV. 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O

A

I, II, and III only

B

I, II, and IV only

C

I, II, III, and IV

D

I and II only