The answer to this is B. There is a need for the volume of the blood being produced by the heart to increase because of the condition that the person is going through. There are a lot of people who feel that cardiac output is always a bad thing. People who are suffering from sepsis may experience this.
At this point in time, this is needed in order to cope with the condition that the patient is suffering from Pulmonary edema is a serious condition wherein there is an excess amount of fluid that is found in the lungs. Take note that the more grave this condition is, the more fatal it can be to the person suffering from it.