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 buy wine for a gift [title] Go mid-range to high end. [step] It's tempting to buy a cheap wine to give as a gift, particularly if you don't know much about wines. However, cheap wine will taste cheap. <sep> (A) Buy the cheapest wines possible at low prices for a lot of fun and a nice gift. [substeps] Vintage wine is well worth the cost, but it won't taste well if you're not buying the bottle. (B) A higher end wine will go right up top and faster, so full quantities have more potential to go up the price of a bottle. [substeps] Anyway, consider your palate when determining whether a bottle is a good choice for your party. (C) [substeps] Spend time visiting upscale restaurants near your destination and learn about wines on your visits. Ask for the wine they recommend to see if you can trade it for cheaper. (D) That's not to say that you can't get a decent wine for a reasonable price. You just don't want to pick the cheapest wine, especially if you've never tasted it yourself.

Ex Output:
D

Ex Input:
A group of people are seen walking around when two men grabs hands. the men <sep> (A) then begin playing tug of war and throwing one another's hands up in the air. (B) then begin arm wrestling one another while other watch. (C) then begin playing darts while others watch them on the sides. (D) then reach into a bag that is sitting in the sand.

Ex Output:
B

Ex Input:
[header] How to not let acne get you down [title] See a dermatologist. [step] This is an important first step. In many cases, acne is curable when treated properly. <sep> (A) You can see a dermatologist by asking him or her some important questions about your underlying issues. Be sure to mention this before you start testing your acne with the doctor, as your doctor may want to do additional tests for you. (B) However, it can affect several factors: age: people can develop acne within one decade of age. Due to conditions which develop very suddenly, it is important to see a dermatologist. (C) Dermatologists specialize in treating skin conditions. A recommendation from your doctor will take the guesswork out of trying to treat your acne. (D) But you should always see a dermatologist if acne is something you cannot control, especially if it's a flat, basic problem. It's important to know the severity of acne and what treatment will benefit you and your cause (s) in future life.

Ex Output:
C