In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

Someone in a room without any lights on, but that has mirrors in it, can still have light in that room if (A) lights are turned on in another house (B) a joined room is dark (C) the room is completely dark (D) a joined room is lit
D