21. 以下配對何者為正確?1. 無心臟、血管病變,但發高燒 --- bounding pulse2. 嚴重主動脈瓣狹窄 --- pulsus tardus (slowly rising pulse) 及 parvus (reduced amplitude)3. 嚴重左心室功能衰竭 --- pulsus alternans(交替脈)4. Cardiac tamponade --- pulse deficit
(A) 1, 2
(B) 2, 3
(C) 1, 2, 3
(D) 1, 2, 4
(E) 1, 2, 3, 4