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 export contacts from outlook 2010 [title] Open your outlook 2010 program. [step] Wait for all your data to load. [title] Click the file tab on the top outlook toolbar. <sep> (A) [step] This is in the " import " menu. If you don't see all of your contacts, keep scrolling down until you find the " export individual " button. (B) [step] Select " options " in the dropdown menu. [title] Choose " advanced " from the tabs in the left hand column of the dialog box. (C) [step] An outline of the project should appear. [title] Select the import only option in the drop-down. (D) [step] On the top toolbar, click " import data from wizard. " [title] Click the name of the personal notification panel you would like to import from the list of personal notification panel files in your outlook 2010 program.

Ex Output:
B

Ex Input:
[header] How to lance and drain a blister [title] Assess the blister before choosing to drain it. [step] Not every blister needs to be lanced. In fact, some experts recommend that you should only drain blisters that are exceedingly painful, in weight-bearing or high-contact areas, or larger than 0.8 inches (2 centimeters) in diameter. <sep> (A) [substeps] If the blister is intact and manageable, try to keep it intact. Apply a piece of moleskin, adhesive felt, or tape. (B) In these instances, you need to check the blister to determine if it needs a leak-proof drain. [substeps] See the " how to drain a blister " section of this article for instructions. (C) [title] Make a decision whether or not to drain the blister. [step] If the blister is very painful, medical sterilization is an option. (D) [substeps] There is no one right way to do this, so you have to be sure that you have the right technique. It is not as easy to clean a blister as to rinse with water and applying a sterile dressing.

Ex Output:
A

Ex Input:
[header] How to make baking soda crystals [title] Boil the water. [step] To make baking soda crystals, you start by making a water solution that's saturated with baking soda. The baking soda will dissolve better in warm water. <sep> (A) Measure 2 cups (470 ml) of water into a kettle. Turn on the kettle to boil the water. (B) A large pot will work, as long as the water temperature is medium. [substeps] You can also use a kettle, but never boil this water. (C) Fill a strainer or a large bottle or container with water. Boil water for 10 minutes, stirring occasionally. (D) So, set the temperature to the water content appropriate for the nature of your mixture. [substeps] If you haven't had any time to try your recipe, check to see if your recipe calls for cup of boiled water.

Ex Output:
A