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". 

Ex Input:
[header] How to solo travel to vienna [title] Plan to stay in a hostel. [step] When traveling alone, it's always a good idea to stay at a hostel. Not only are hostels generally cheaper than hotels, this will help you meet people during your travels. <sep> (A) Taking advantage of free accommodations can help you pass the time and save money. [title] Plan initial backpackers getting used to the cities and customs of vienna on the flat travelling budget. (B) While there are many events you may enjoy alone, vienna has a booming nightlife. On occasion, you may want company for a night out, so a hostel is a good option for this. (C) It will also offer a safe, modern way to escape from the nightlife. An hostel is also a good place to set your budget on a day-to-day basis as you decide if you want to stay alone. (D) Search online for hostels near you if you want to take a trip somewhere you've never been, and plan to stick to the hostel's offerings. [substeps] The best traveling companions who are available in these places will be people who seem friendly, adventurous, and easily reunited from their long life.

Ex Output:
B


Ex Input:
[header] How to reduce unnecessary antibiotic use [title] Be more patient with your illness. [step] As a patient, it can be hard to have an illness that's causing uncomfortable symptoms and lots of distress; however, many respiratory and intestinal infections clear up within a few weeks and are not life threatening. As such, take the time to assess your symptoms before visiting the doctor. <sep> (A) This can help avoid unnecessary antibiotic use. [substeps] The rule of thumb is to allow symptoms like mild fever, congestion, running nose and/or cough to run their course, usually about seven to 10 days. (B) That way, and possibly minimize all complications. [title] Be proactive about completing your medical check-ups. (C) [substeps] For instance, your doctor may ask for certain vaccinations and vaccines. You may want to call your healthcare provider to confirm the vaccine has been given and how well the bacteria is working. (D) [substeps] Watch for signs of illness that reoccur after you stop taking prescribed medication. Conditions such as repeated inhalation of a foreign substance can result in chest pain.

Ex Output:
A


Ex Input:
[header] How to check a potential tenant's credit [title] Obtain the applicant's personal information. [step] To run a credit check, you'll need certain personal information from the applicant. Get the following : [substeps] Full legal name date of birth social security number previous address landlord contact information [title] Get permission to do a credit check. <sep> (A) [step] Protect yourself by having the applicant agree in writing that you can run the credit check. Put the permission on a sheet of paper that is separate from the rest of the application. (B) [step] If the applicant's personal information has been obtained through an illegal or unfair online source, you must order permission. However, keep in mind that you won't have the ability to proceed without permission. (C) [step] Anyone can obtain a credit check, but people with a credit card need some personal information. Type up the following : [substeps] Make sure your business address and business telephone numbers are all correct. (D) [step] If you've been working for a non-approved credit agency, you typically don't have to get permission to conduct a credit check. However, you do have to get permission to search for a tenant's credit report.

Ex Output:

A