We do not use carbon dioxide to fuel our blood cells. It is a waste.
Arteries move blood from the heart to the rest of the body.
Veins carry the blood to the heart to be oxidized. 
"D" is not correct. 
"B" is not correct.
We know that veins carry blood to the heart, lungs exhale carbon dioxide. 
"A" is the correct answer.
I hope this helps!
~kaikers
        
                    
             
        
        
        
primary division of the sea, which includes the whole mass of water subdivided into neritic and oceanic zones; also pertaining to the open sea (open water)
 
        
             
        
        
        
It is the cell’s powerhouse and processes energy for the cell.
I was told to remember it as the main brain or the head honcho.Hope this helps.