i don`t care ___ we are invited to the dinner.

题目

i don`t care ___ we are invited to the dinner.
A.if or not B.whether or not C.what D.that
请问选哪个,为什么选这个?其它的为什么不对呢?十分感 谢

答案

B
if whether的区别
if只能用于宾语从句但有三种情况不能用
（1）whether or not
(2)whether to do
(3)介词+whether
that whether意思上不一样
what在名词性从句中能够做成份,而 we are invited to the dinner不缺成分