Which statement is true regarding a chemical reaction?
Even if the total number of atoms does not change, mass may not be conserved in the reaction.
A: Even if the total number of atoms does not change, mass may not be conserved in the reaction.
B: The total number of atoms does not change, so mass is conserved in the reaction.
C: The total number of atoms changes, so mass is conserved in the reaction.
D: Even if the total number of atoms changes, mass may not be conserved in the reaction.