C. and D. should be your answers. If not, its A. and B.
Hope this was helpful...
The correct answer is complement.
Like you wrote above, to complete is when you make something whole. Complement is something that completes your collection. The bronze statue completed her collection perfectly, which is why it was a good complement. Somebody can give her a compliment on her complement, however, meaning that he or she can praise the statue. :)
L say its B because Mrs. White had some sarcasm in her tone when she said those words.
