55. Wheezing 由輕微至嚴重的分期為何？1 normal breathing sound2 expiratory 時有 wheezing3 end-expiratory 時有 wheezing4 inspiratory 與 expiratory 時均有 wheezing5 no breathing sound
(A) 1 → 2 → 3 → 4 → 5
(B) 1 → 3 → 2 → 4 → 5
(C) 1 → 4 → 2 → 3 → 5
(D) 1 → 5 → 3 → 2 → 4