A)left ventricle → aorta → lungs → systemic circulation
B)right ventricle → pulmonary vein → pulmocutaneous circulation
C)pulmonary vein → left atrium → left ventricle → pulmonary circuit
D)vena cava → right atrium → right ventricle → pulmonary circuit
E)right atrium → pulmonary artery → left atrium → ventricle