Cellular respiration has carbon dioxide and water as waste products, or the A answer.
We can see how the equation of this process is:
![C_6H_(12)O_6+6O_2=6CO_2+6H_2O+ATP_{}_{}](https://img.qammunity.org/2023/formulas/biology/college/ky2gx2sfi4dqszbfifpony9pa3ttwx8bgn.png)
Glucose (C6 H12 O2) + oxygen (O2) in the cellular respiration will give as waste products, CO2 or carbon dioxide, and H2O or water, beyond the ATP, which is the main purpose of this process.