PLZ HELP!!!!
WILL GIVE BRAINLIST


(actually it's 8th grade science)

Which chemical reaction involves the most hydrogen atoms?

A. 6CO2 + 6H2O + light → C6H12O6 + 6O2

B. C3H8 + 5O2 → 4H2O + 3CO2 + energy

C. 10Fe + 7O2 + H2O → 5Fe2O3 + H2

D. HC2H3O2 + NaHCO3 → NaC2H3O2 + H2O + CO2