19. 下列何者為非相配之組合?
(A) Paradoxical pulse; cardiac tamponade
(B) Pulsus parvus et tardus; severe aortic stenosis
(C) Bounding pulse; severe acute aortic regurgitation
(D) Pulsus alternans; severe left ventricular failure
(E) Pulse deficit ; atrial fibrillation with rapid ventricular rate