设椭圆C1的离心率为,焦点在x轴上且长轴长为26.若曲线C2上的点到椭

设椭圆C1的离心率为,焦点在x轴上且长轴长为26.若曲线C2上的点到椭圆C1的两个焦点的距离的差的绝对值等于8,则曲线C2的标准方程为(  )

A.1                                            B.1

C.1                                            D.1

答案

 A

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