Instructions: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Input: [header] How to plan a trip on public transportation using google maps [title] Get on google maps, and click on the " get directions " tab. [title] Click on the second symbol that looks like a train. [step] It is directly to the right of the car. <sep> (A) That is the tube that runs to your destination. [title] Identify the route you want to take. (B) [title] Change the setting asking you if you want to " leave now " based upon your current situation. [step] For example, you might want to be at a certain place by 2 o'clock, then you would select " arrive by " or if you wanted to depart at a certain time you would select " depart at. (C) [title] On the next screen, select all stations (you can see them scattered throughout town) and type " we need to go " into the search field. [title] Click on it to see directly on the map what you are looking for. (D) It will move you to an alternate route. [title] Go left and right, depending on where you are on the map.
Output:
B