Alice and Bob are supposed to meet, but haven't decided between two possible locations (the bar or the library). Alice is on her way, and will arrive first. She chooses where to go and sends Bob her location. Bob sees her location and then chooses where to go. Alice prefers the bar, while Bob prefers the library, but both would rather go to the same place than end up in different locations.

The figure below contains four different extensive form games. Which one could represent the situation we just described?