I really don't know __I had my money stolen.A.where was it that B.that it was when C.where it was that D.it was where that 选C的解析

I really don't know __I had my money stolen.
A.where was it that B.that it was when C.where it was that D.it was where that
选C的解析

C.where it was that
这是特殊疑问句的强调句,且做宾语从句的情形.语序：疑问词+it is或was+that+其它