You are given a sentence and a question. You're expected to write the correct answer based on the sentence.
Q: Sentence: Patricia couldn't read in bed very well when she relied on her nighstand lamp, which didn't throw off much illumination from its fixed location. She solved that problem by buying a clip on light which attached directly to the book she was reading and illuminated it beautifully. Question: Which light source was closer to Patricia's book?
A:
The clip on light