In the Reaction C₆H₁₂O₆ ⁺ 6 O₂ → 6 CO₂

In the reaction C₆H₁₂O₆ ⁺ 6 O₂ → 6 CO₂ ⁺ 6 H₂O,the 6 CO₂ molecules are examples of

A) substrates.
B) products.
C) enzymes.
D) reactants.