My aunt has a sister.She isn't my aunt.Who is she? A.my mother.B.my teacher. C.my friend.怎么回答呀

My aunt has a sister.She isn't my aunt.Who is she? A.my mother.B.my teacher. C.my friend.怎么回答呀

答案是 A

翻译：我的姨姨有个姐妹，但不是我姨姨，答案就是你妈妈。

A 我的姨妈有一个妹妹，她不是我的姨妈。
追问：谢谢

A,妈妈是AUNT的妹妹。
追问：谢谢

A 我舅母有一个姐妹，她不是我舅母，所以是我妈。亲戚关系
追问：好像不对