下列各组中两个式子是同类项的一组是

A．3x²y和3xy²

B．4ab和4ac

C．x³和53

D．12和﹣5

If a lot of people say a film is not good, I won’t bother to see it, or I’ll wait ______ it comes out on DVD.

A. whether        B. after              C. though              D. until