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 view is seen of the outside of an airport, then the wing of the flying plane. A man is on the plane wearing a mask. several people <sep> (A) are sleeping in the dark quarters. (B) fly by on a road inside the plane. (C) are shown flying the aircraft, while shooting at a large target at one point. (D) speak, then they all fly kites on the plane while people walk by.

Ex Output:
A


Ex Input:
The horse gets up but, the man remains on the ground. The other players and a referee ride their horses away. one of the players and a woman <sep> (A) run to the field to inspect the ond horse. (B) walk over to check on the man on the ground. (C) lift up dirt to clean the horses hooves and a replay is shown of the actual hoofs. (D) walk to the man & them.

Ex Output:
B


Ex Input:
[header] How to make white smoke [title] Gather your supplies. [step] For this experiment, you will need a large bucket, such as one that holds 10 gallons (38 l). You will need water. <sep> (A) The bucket should be wide enough to hold 5 gallons (97 l) of water. The bucket should have several compartments in it that make it easy to empty the bucket each time you water. (B) A distilled white liquid method will work, but for more durability, you can try using water from the tap instead. You will need at least 50% water in the bucket. (C) Get 5 gallons (2.44 l) of water. When using a lighter, make sure to place a small, hollow blow-gun on the nozzle in order to ignite it. (D) You will need a lighter, a pack of matches, or a fire igniter. Finally, you will need 5-10 pieces of plain printer paper.

Ex Output:

D