I don,t care_____we are invited to the dinnerA、if or notB、whether or notC、whatD、that选哪个 为什么?

I don,t care_____we are invited to the dinnerA、if or notB、whether or notC、whatD、that选哪个 为什么?
I don,t care_____we are invited to the dinner
A、if or not
B、whether or not
C、what
D、that
选哪个 为什么?

I don,t care_____we are invited to the dinnerA、if or notB、whether or notC、whatD、that选哪个 为什么?
b 是否 后面有or not 时 要用whether