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 protect yourself from replica watch websites [title] Use your credit card. [step] Not your debit card, but your credit card. [substeps] The only payment method you should use is credit card. <sep> (A) Using a credit card only licenses you to pay for certain services, such as security clearance. Also, you can get a replica watch at the store. (B) Then you'll pay with cash or check. If cash cannot be reached, that means that your account is not secure. (C) If you want to shop around, try to use a credit card, as they don't grant these types of deals. For example, you can use a credit card to buy super priced watches, but in return they must be an anniversary gift. (D) This is the only payment option that protects you from internet scams. Why? Because your bank has your back.

Ex Output:
D

Ex Input:
[header] How to decrease your chances of being hacked on a pc [title] Don't open unexpected or unfamiliar links. [step] Hackers monitor the online activities of the user and according to their interests they attach the links of their suspicious sites with the content users are exploring. They may send you spam and junk data to promote their financial and promotional intention. <sep> (A) [title] Disable hardware required to make clicking the link real. [title] Tidy up the settings on your browser to sound less suspicious. (B) [title] Use different passwords for different sites. [step] Using different password for different sites will protect you such cases, if your one id has been hacked. (C) Doing this does not necessarily mean they are reliable, they might be shady. Some hackers tend to play scams on computers that are not supported. (D) [title] This doesn't save you time, your antivirus and applications protection will suffer as time goes on. [step] You will need to quarantine the server (on the private or public) during a locked software acquisition.

Ex Output:
B

Ex Input:
[header] How to elevate your hand while sleeping [title] Sleep on your back or side. [step] In order to elevate your hand while you're sleeping, you'll need to sleep on your back or on the side opposite of the arm that needs elevation. This is the easiest resting position for elevating your hand. <sep> (A) [substeps] Lying on your side not only has been shown to help alleviate hand inflation, but it also improves circulation in and around the hand and wrist joints. It's also more efficient than sleeping on your side. (B) [substeps] You can use a pillow to support your arm when you start to feel like your hand's elevating off the ground. Place a rolled up towel over your head to help prevent air from pooling near your arm. (C) [substeps] Sleeping on your stomach won't allow you to elevate your hand as easily. It's much harder to prop it up from behind if you're lying flat on your stomach. (D) [substeps] Lie on your back with the pillow propping your head up at a 45 degree angle. Your dominant hand should support the bottom of your pillow.

Ex Output:
C