eqId5b55a800c13841a9a950777de0f0dec7eqId12f9c6835d614506a3526cd8b41fc191eqIda3c456e8a11b420f987a09ca3bc3776beqId36f009e87a3c46069f2413991132f58beqId86125efb15b74036a7ea98884e97150b中,分式的个数是(  )
A. 1                            B. 2                             C. 3                             D. 4
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