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 spot an online scam [title] Ask yourself: do they require you to pay money up front? [step] If they are requiring any sort of up front payment to use their services, it is almost always a scam. Many of them will claim that it's for the cost of training, etc. Most of that is just lies. <sep> (A) More often than not, the scammer will take your money and run. [title] Ask yourself: do they promise that you will become rich overnight? [step] Let's face it. (B) They may also require you to pay them a fee to do the work of the scam. [title] Start by taking note of the offer terms. (C) If you fail to pay them back, they won't actually use the services they have. Sometimes, scammers simply want to get their money from you to start their scam. (D) Do not discuss this with anyone else, unless you know for sure that it is indeed a scam. [title] Determine whether you're being harassed.

Ex Output:
A

Ex Input:
[header] How to get super glue off skin [title] Select the right nail polish remover. [step] Acetone is the substance in nail polish remover that helps dissolve superglue for removal. You need an acetone-based remover in order for this method to be successful. <sep> (A) Too much acetone can cause further damage and discoloration, so look for an acetone-based remover that contains benzoyl peroxide. This form of treatment works best on especially dark blemishes, but you can also use this method for lighter polishes. (B) For the traditional " acetone-based " nail polish remover, create a thick, grainy layer on both sides of each nail. [substeps] Alternatively, you can soak a cotton ball in acetone and dab it up against the entire surface of each toenail. (C) [substeps] Check the ingredients label of your nail polish remover. Acetone should be listed here, usually towards the top of the list. (D) It may be injected directly into the concealer border or you can buy it online. You can use a nail art brush to apply the acetone, or dip a cotton ball in acetone-based remover and gently rub your skin with the cotton ball.

Ex Output:
C

Ex Input:
[header] How to rolf yourself [title] Purchase a foam roller or lacrosse ball. [step] There are several pieces of equipment designed specifically for myofascial release. Purchase a foam roller, lacrosse ball, or specialty myofascial release tool online. <sep> (A) [substeps] You do not need to purchase a basketball or tennis puck to use the foam roller. You can rent or buy a lacrosse or tennis stick from a sporting goods store. (B) Read reviews on the tools before you purchase them to make sure that they worked for other people. [title] Locate sore trigger points on your body. (C) [substeps] Anywhere from 4 feet (1.8 meters) to 3 feet (1.4 meters) is good for leakage. Make sure that you are able to set your mat or train the balls in a safe manner with the roller. (D) [substeps] These can range from $20-250 usd tools and are available both pre-and subscription models. Some sports stores are on sale with foam rollers that have been screened.

Ex Output:
B