36. Which sequence of blood flow can be observed in either a reptile or a mammal? (A) left ventricle aorta — lungs — systemic circulation. (B) right ventricle — pulmonary vein —^ pulmocutaneous circulation. (C) pulmonary vein — left atrium —^ ventricle pulmonary circuit. (D) vena cava —• right atrium —^ ventricle —＞ pulmonary circuit. (E) right atrium — pulmonary artery — left atrium — ventricle.