Which of the following equations is the chemical reaction for cellular respiration?

A)C₆H₁₂O₆ + 6O₂ $\rightarrow$ 6CO₂ + 6H₂O
B)6CO₂ + 6H₂O $\rightarrow$ C₆H₁₂O₆ +6O₂
C)CaSiO₃ +CO₂ $\rightarrow$ CaCO₃ +SiO₂
D)C₆H₁₂O₆ + 6CO₂ $\rightarrow$ 6O₂ + 6H₂O