How are Pedro Cabrales and his team influencing the work to develop artificial blood? А They are developing blood substitutes by imitating blood functions from animal species. B They are researching ways to prevent injected hemoglobin from breaking down inside the human body. C They are making fluids to increase blood volume in the human body for when a blood transfusion is not possible. D They are testing the effectiveness of perfluorocarbons at different oxygen levels to improve its use in human patients.