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:
[header] How to dry out wet currency [title] Find a dry space. [step] Make sure the bills are kept in a room with good air circulation to lessen the time it takes for the bills to dry. Keep the bills in an area where they won't get blown away or easily lost. <sep> (A) [substeps] At home, you will be able to air dry your currency if your bills stay wet. [title] Store your currencies in a dark, dry place. (B) Avoid putting the bills near open air vents or next to tight crevices where the bills could fall. Try arranging them on the edge of a sink so the water will drip to the ground. (C) Good air circulation should not damage the bills, but it shouldn't be expensive either. [title] Make sure the area is clear of wet or air-logged fabric or paper. (D) [title] Keep your bank account secure if possible. [step] Also, to help the currency from drying out, make sure the extra cash is well hidden in the bank so it isn't moved quickly to prevent the contents from spoiling or breaking up in transit.

Ex Output:
B

Ex Input:
[header] How to create an investment plan [title] Select an age-appropriate investment option. [step] Your age will have a significant impact on your investment strategy. [substeps] Generally speaking, the younger you are, the more risk you can take. <sep> (A) Younger investors may also feel more pressured and overwhelmed; however, if you are under eighteen the risks you might experience outweigh the benefits. If you are young, for example, assume you have a $65 million investment portfolio to begin with. (B) You need to invest more often, have more interest in the product or service you're starting, and make more money. You should begin by considering a growth year or a milestone date. (C) Long-term investments will have a high interest rate of 75% or more. If you've got a general mastery in the field and have thirty years of experience, this is a good approach. (D) That's because you have more time to recover from a market downturn or loss of value in a particular investment. So, if you're in your 20's, you can allocate more of your portfolio to more aggressive investments (like growth-oriented and small-cap companies for example).

Ex Output:
D