@emileefaircloth24: A patient's heart rate is 120 and stroke volume is 50 mL. What is their cardiac output? A. 3 L/min B. 5 L/min C. 6 L/min D. 8 L/min Correct answer: C. 6 L/min. Cardiac output = heart rate × stroke volume. ##respiratory##RTquestons##hemodynamics