What Leverage Do the House and Senate Appropriations Committees Have

What leverage do the House and Senate Appropriations Committees have over the bureaucracy?

A) Bureaucratic heads must report all their activities to these committees.
B) Bureaucratic heads are annually required to tell the committees how they spend public funds.
C) These committees appoint the heads of federal agencies.
D) These committees approve rules proposed by agencies.
E) These committees recommend agencies to be elevated to cabinet level.