The Balanced Equation for Nitrogen Fixing Is Given Below

The balanced equation for nitrogen fixing is given below. What do the numbers in front of the molecules (the coefficients) mean? N₂ + 3 H₂ → 2 NH₃

A) Three moles of H₂ react with one mole of N₂ to give two moles of NH₃.
B) Three grams of H₂ react with one gram of N₂ to give two grams of NH₃.
C) Three atoms of H react with one atom of N to give two molecules of NH₃.
D) Two grams of N react with six grams of H to give eight grams of NH₃.
E) All of the above