Nadia, Xiulan, and Jabari are in a room when they see a cupcake with a note beside it. The note reads "For the first person who enters the room after 3 PM." It is now 2:45 PM. Nadia cannot read the time and also has to leave urgently for an appointment. Xiulan can read the time but plans to leave at 2:50 PM and won't return for the day. Jabari knows he will be in the room all day. Nadia asks Jabari to tell her if she can take the cupcake, assuming she trusts Jabari. Predict who will end up with the cupcake and why, given each person's knowledge and constraints.

Provide a brief response.
Jabari will end up with the cupcake because he is aware of the stipulation on the note and knows he will be in the room all day, including after 3 PM. Although Nadia is currently in the room, she is unaware of the time constraint due to her inability to read the time and will be relying on Jabari's knowledge to make her decision. Since Jabari knows Nadia has to leave before 3 PM and cannot take the cupcake based on the note's condition, he would inform her of this if he is trustworthy. Xiulan is also in the room but plans to leave before 3 PM and is aware that she does not meet the condition set by the note. Since she won't return, she is ineligible to take the cupcake. After Nadia and Xiulan have left, and since no additional information is provided about anyone else entering the room after 3 PM, Jabari, being present in the room after the stipulated time, will take the cupcake in accordance with the instruction on the note.