PL ANSWER how does a balanced chemical equation represent the conservation of matter in a chemical reaction?

a. the type of matter in the products is different from the type of matter in the reactants.

b. there are more atoms in the reactants than in the products.

c. there are fewer atoms in the reactants than in the products.

d. the number of atoms of each element in the reactants equals the number of atoms of each element in the products.