Please choose the correct ending to complete the given sentence: Travel: [header] How to get around london easily [title] Know how you're going to travel. [step] The easiest method of travel in london is the tube. For this, it is easiest to buy what is called an' oyster card' or a get a travelcard for all zones from one of the automated machines in a tube station.

Ending1: People take an oyster card (this is a permanent, digital card) for optimal services and there are a number of reputable card companies that buy oyster cards. [title] Firstly, when considering destination, are you travelling with a package? [step] Do you want to surprise your friends and family at london. Ending2: These cover buses, tubes, trams and overground trains throughout the city. This is usually the best option, especially for tourists, as you can travel as much as you'd like in one day with one flat fare. Ending3: [title] Know the locations of the railway stations you are going to. [step] Look for normal bus lines around london. Ending4: The card lets you ride on the tube without the added cost of any rail, bus, or train stops. You can also travel by car (train makes easier to return for rides in london if you're travelling as non-railway cars), train from the station, or post office.

Answer format: ending1/ending2/ending3/ending4