The correct answer is: C. Both A or B
A WTT (Working Time Table) is a document that lists the times when trains are scheduled to depart and arrive at each station. It also includes information about the types of trains that are running, the platforms they will use, and any special instructions for passengers.
A caution notice station is a station where there is a risk of trains passing each other at close quarters. This can happen when there is a single track line or when there is a temporary disruption to the normal service. When a train is approaching a caution notice station, the driver will be given a warning signal and will need to slow down and be prepared to stop if necessary.
Information about caution notice stations is included in both WTTs and working time tables. This is because it is important for passengers to be aware of the risks involved in traveling to or from these stations.