Answer: The correct answer is Option A.
Explanation:
Law of Conservation of mass states that mass can neither be destroyed not be formed but it can only be transformed from one form to another form. Total mass in a chemical reaction remains conserved.
From the given chemical reaction:
On reactant side:
Number of oxygen atoms = 12
Number of sulfur atoms = 6
From the given options:
Number of oxygen atoms = 12
Number of sulfur atoms = 6
Number of oxygen atoms = 18
Number of sulfur atoms = 6
Number of oxygen atoms = 9
Number of sulfur atoms = 6
Number of oxygen atoms = 12
Number of sulfur atoms = 4
Hence, the correct answer is Option A.