The football match between Class One and Class Three was going on. You were one of the players of Class One. In the first half, your team lost a goal. What happened in the second half?

节能住宅由于最大限度地采用了（）照明，因而大大节约了电源，给置业者减少生活开支。

A.白炽灯

B.日光灯

C.自然光

D.台灯