in which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products

A. CO2+H2O→CH2OH+O2
B. LI2CO3→LiO+CO2
C. Zn+2HCI→H2+ZnCL2
D. Ch4+O2→CO2+2H2O

C. Zn+2HCl→H2+ZnCl2