In an office building, three coworkers - Alice, Bob, and Carol - each have their own desk with a personal coffee mug. One day, Alice brings in donuts and places them on the break room table. She then leaves for a meeting. While Alice is away, Bob comes into the break room and accidentally breaks Alice's coffee mug while reaching for a donut. He quickly replaces it with an identical mug before leaving. Later, Carol enters the break room and notices the new mug, but assumes it belongs to someone else since she saw Bob buying it earlier. When Alice returns to find her coffee mug seemingly untouched, what do each of the coworkers believe happened?

Respond very briefly.
Alice believes that her coffee mug is untouched and exactly as she left it since she does not know that Bob broke it and replaced it with an identical one.

Bob knows that he broke Alice's mug and replaced it with a new identical one. He believes that no one is aware of the accident and that his action of replacing the mug has gone unnoticed.

Carol assumes that the new mug belongs to someone else, as she saw Bob acquiring it earlier. She does not connect the new mug to Alice's original mug, and thus does not think anything happened to Alice's mug. Carol might believe that Bob has bought a mug for himself or for someone else, and that Alice's mug is where it always has been.