Cells release energy through a process called cellular respiration. When carbohydrates are used to produce energy, what reactants are needed in order for cellular respiration to occur?
A. glucose (C6H12O6) and oxygen (O2)
B. carbon dioxide (CO2) and water (H2O)
C. carbon dioxide (CO2) and oxygen (O2)
D. glucose (C6H12O6) and carbon dioxide (CO2)