instruction:
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". 
question:
[header] How to travel abroad [title] Do your research. [step] You need to research where you are going, the flight times and prices for airlines, and which documents you need to take with you. Plan out your itinerary carefully. <sep> (A) Some cities, like london or paris, really need a week to see what they have to offer. Travel times also need to be taken into consideration. (B) For example, visit a couple of websites of airlines to see what type of itinerary they offer. Pay attention to the price, name, phone number and/or mailing address of each airline. (C) This will help ensure that all of your research enables you to see where you want to go. [substeps] Do research on an airline's website, and see what seat guides they offer on planes and what websites they provide online. (D) [title] Decide whether you will be flying from 1 area or from another. [step] International flights should likely be just a teaser.
answer:
A


question:
[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.
answer:
A


question:
[header] How to make crustless quiche [title] Preheat your oven to 325 ° f (160 ° c). [step] Make sure that the baking rack is set in the middle. [title] Generously butter a 9-inch (22.86-centimeter) pie plate. <sep> (A) [step] Prepare the pie crust by greasing it with a little olive oil or by gluing the crust closed with parchment paper. [title] In a clean 2 gallon (3.775 liter) pie pan, bake for about five minutes. (B) [step] Roll out the butter and place it on the pie plate. [title] Measure out the whipping cream, sugar, milk, and eggs. (C) [step] This quiche doesn't have a crust, so you want to make sure that it won't stick to the pie plate. If you'd prefer individual servings, butter 4 to 6 ramekins instead. (D) [step] Prepare a side of the pie plate (or a large bowl, if working with pie) with a 2 1/2 quarts (1.9 l) water. [substeps] Apply butter to a 9-inch (22.86-centimeter) pie plate/bowl.
answer:

C