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:
A person is seen playing the drums while others watch on the side. the men <sep> (A) laugh with one another as the man continues to play. (B) lower their cymbals while still playing. (C) play the drums on the stage while others watch on the side. (D) continue playing the drums on the beach and ends with a picture of the drum player.

Ex Output:
A


Ex Input:
[header] How to clean a raincoat [title] Check the label. [step] The care label is located on the inside of your raincoat near the collar. It includes information provided by the manufacturer on how to clean your raincoat. <sep> (A) There is no specific cleaning instructions that clearly say how to clean your raincoat. Keep an eye out on the outside of your raincoat, especially if you're using the method listed on the label. (B) A typical safety label might state that this is the safest to use and ask you to let it sit with you as you wear it. Because the manufacturer does not provide the information about cleaning a raincoat, you will not be exposed to certain fumes during the cleaning process. (C) You can read " care " or " cleaning " in the manual, and " cleaning " online. For example, some seous manufacturers may require that you wear an apron before cleaning it. (D) Once you've read the care label, follow its instructions closely in order to most effectively clean your raincoat. [title] Wash your raincoat in the washing machine.

Ex Output:
D


Ex Input:
[header] How to clean dust mites [title] Steam clean carpets and furniture. [step] Dry vacuuming will not pick up dust mites from your carpets. Whenever possible, steam clean the carpets in your home. <sep> (A) First use an enzyme-resistant vacuuming cycle. Create a steam cleaning cycle using warm water and a mild dishwashing detergent. (B) The oil helps remove the larva, and the dust mites get picked up by hovering your vacuum over the cracks. [substeps] Start off by running your vacuum over your carpets, or by wiping over with a damp cloth once they are clear of dust mites. (C) The heat from the steam will kill the dust mites, making steam cleaning a highly effective method. [substeps] Steam clean your carpets and furniture at least 3 times per year. (D) Not only will this help to prevent dust mites, but your carpets will give you new ceilings. You may also opt to machine clean and air dry the carpets.

Ex Output:

C