40.0 grams of oxygen gas react with
12.5 grams of hydrogen gas. What is the limiting reactant and how many grams of water will be produced?
2H2 + O2 → 2H2O
A) O2; 2.50 grams H2O produced
B) H2; 113 grams H2O produced
C) O2; 45.0 grams H2O produced
D) H2; 6.25 grams H2O produced

Please help asap!!! Show work pls too !!!