How does the author support the claim that artificial blood would solve problems posed by human blood? А by showing how bioengineers are developing blood substitutes based on different animal species B by describing how artificial blood can be easily transported, stored, and matched with any blood type C by emphasizing how artificial blood substitutes do not need to perform all of the functions of real blood D by explaining how scientists are working to prevent hemoglobin fror breaking down and having a toxic effect on the body