Mr. Hopkins has not yet answered my question ______ I can go with him to______he calls the Underground Treasure House next week

1. A.
   that; which
2. B.
   that; where
3. C.
   whether; that
4. D.
   whether; what

 Mr. Hopkins has not yet answered my question ______ I can go with him to______he calls the Underground Treasure House next week.

　　A. that; whichB. that; whereC. whether; that D. whether; what