For the redox reaction, MnO−4+C2O2−4+H+→Mn2++CO2+H2O, the correct coefficients of the reactants for the balanced equation are _____________.
A MnO−4=2,C2O2−4=16,H+=5
B MnO−4=16,C2O2−4=5,H+=2
C MnO−4=5,C2O2−4=16,H+=2
D MnO−4=2,C2O2−4=5,H+=16