请选择DCBA0?9}9~5p,V:K6y-NMy father has ______air-conditioner.1H(y-X7u5_9F
A. a1H(y-X7u5_9F
B. an1H(y-X7u5_9F
C. some1H(y-X7u5_9F
D. \1H(y-X7u5_9F