$\text{Description for the following question:}$
Given below is the time table for a transcontinental train cutting across several time zones. All times given below are local time in respective cities. It is given that the average speed between any two cities is the same for both way journeys.
$$\begin{array}{|c|l|c|l|} \hline \textbf{local time}& \textbf{local time} & {} & & & \textbf{local time}& \textbf{local time} \\\hline \textbf{arrival}& \textbf{departure} & & \textbf{City}& & \textbf{arrival}& \textbf{departure} \\\hline -& 06:00 AM & \downarrow& \text{Zut} & &12:40 PM &\;\;\;\;\;- \\ 07:45 AM& 07:50 AM &\downarrow & \text{Yag} &\uparrow &10:50 AM & 10:55 AM\\ 09:40 AM& 09:45 AM &\downarrow & \text{Xum} & \uparrow & 06:55 AM & 07:00AM\\ 12:10 PM& 12:15 AM & \downarrow & \text{Wip} & \uparrow &02:25 AM & 02:30 AM \\02:45 PM& 02:50 PM & \downarrow & \text{Vaq} &\uparrow &11:50 PM & 11:55 PM\\04:05 PM& 04:10 PM & \downarrow & \text{Uap} & \uparrow &08:30 PM & 08:35 PM\\05:40 PM& 05:45 PM & \downarrow & \text{Tix} &\uparrow &04:55 PM & 05:00 PM \\ 07:40 PM& 07:45 PM & \downarrow & \text{Sab} & \uparrow&12:55 PM & 01:00 PM\\ 10:40 PM&\;\;\; \;\;- & & \text{Raz} &\uparrow & \;\;\;\;\;\;- & 08:00 AM \\\hline\end{array}$$
Which of the following pairs of cities are in the same time zone?
- Zut and Yag
- Xum and Wip
- Vaq and Uap
- Tix and Sab