[-7,-3]上是

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A.增函數(shù)且最小值為-5　　B.增函數(shù)且最大值為-5

B.減函數(shù)且最小值為-5　　D.減函數(shù)且最大值為-5

如果奇函數(shù)f(x)在區(qū)間[3，7]上是增函數(shù)且最大值為5，那么f(x)在區(qū)間[－7，－3]上是(   )

A、增函數(shù)且最小值是－5   B、增函數(shù)且最大值是－5

C、減函數(shù)且最大值是－5   D、減函數(shù)且最小值是－5

如果奇函數(shù)f(x)在區(qū)間[3，7]上是增函數(shù)且最小值是5，那么f(x)在區(qū)間[-7，-3]上是（  ）                            

    A．增函數(shù)且最小值是-5     B．增函數(shù)且最大值是-5

    C．減函數(shù)且最小值是-5     D．減函數(shù)且最大值是-5

如果奇函數(shù)f(x)在區(qū)間[3，7]上是增函數(shù)且最大值為5，那么f(x)在區(qū)間[－7，－3]上是(   )