设抛物线的焦点F是双曲线右焦点.若M与N的公共弦AB恰好过F,则双曲

设抛物线的焦点F是双曲线右焦点.若MN的公共弦AB恰好过F,则双曲线N的离心率e的值为

    A           B         C        D .

答案

    D

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