Has ____ how many spies we caught during the war ____ up to now?

  A. it been declared; have been set free     

  B. it declared; have been set free

  C. they declared; has been set free          

  D. they declared; have set free

Has ____ how many spies we caught during the war ____ up to now?

1. A.
   it been declared; have been set free
2. B.
   it declared; have been set free
3. C.
   they declared; has been set free
4. D.
   they declared; have set free