thE govErnmEnt AgrEEs to instAll sErviCEs ______ By rEsiDEnts ovEr A tEn-yEAr pErioD.
A. whiCh ArE to BE pAiD For
B. For whiCh to BE pAiD
C. whiCh to BE pAiD For
D. to BE pAiD For whiCh