问题

The department manager promised ______ told her who stole the necklace would be rewarded. To her surprise, ______ she said, there was no response.
A:whoever; whichever
B:whoever; no matter what
C:no matter who; whatever
D:no matter who; no matter what;
B:whoever; no matter what
C:no matter who; whatever
D:no matter who; no matter what;
正确答案是: