In a shared apartment, roommates Lily, Mia, and Zoe have separate shelves in the bathroom for their toiletries. Lily keeps her toothbrush in a purple cup, Mia in a green cup, and Zoe in an orange cup. One morning, while everyone is away, the landlord enters the apartment to fix a leaky faucet. He accidentally knocks over all the cups, causing the toothbrushes to fall out. He quickly puts them back into random cups. When the roommates return home, what do they think happened to their toothbrushes? Respond very briefly.
Given that Lily, Mia, and Zoe are used to seeing their toothbrushes in specific cups, they may initially think that someone used or moved their toothbrushes without their consent. Since the cups were knocked over and the toothbrushes were placed back at random, each roommate might notice that her toothbrush is not in the correct cup. This could lead them to believe that either someone else used the bathroom and mixed up their toothbrushes, or there was an incident that caused the toothbrushes to be shuffled. The presence of the leaky faucet and the intention of the landlord to fix it might lead them to deduce that the disturbance was related to the repair work, assuming they were made aware of the landlord's visit.