Uncle Jack is _____. A.my father and mother’s friend B.my fa

Uncle Jack is _____. A.my father and mother's friend B.my father's and my mother's friend
C.a friend of me D.a friend of my mother's and fatehr's
这道题为什么答案给的A,而不是D.
“我的一个朋友”的表达不是“a friend of mine”吗?这里为什么不是“a friend of my mother's and fatehr's”呢?
(请不要无意义灌水，我见一个举报一个)

在这里,这个of 后面跟名词性物主代词最为通顺,
例如 a friend of ours,a friend of mine
正因为 C.不是 a friend of mine,所以才是错的.
a friend of my mother's and father's,非常别扭,没有这样的说法.