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 Q]: [header] How to style hair with hot rollers [title] Get the rollers ready. [step] Go ahead and plug in the hot rollers so that they're fully heated by the time you're ready to put them in your hair. If this is your first time using your set of rollers, read the manufacturer's instructions to make sure you use the equipment properly. <sep> (A) [title] Spray your hair with gentle hold hairspray. [step] Start with dry hair, since your hair won't hold curls if you use this method with wet hair. (B) [substeps] Always hold the handle of the steam wand between your wrist and the rollers. Never hold the handle of a curling iron at a normal straight line. (C) [substeps] Make sure your hair is fully washed and dry to avoid taking off any primer or styling gel. [title] Brush your hair while in the rollers. (D) [substeps] For thicker hair, use an extension. If your hair is thick, use an extension with one end attached to the round back of your hair.
[EX A]: A

[EX Q]: [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 A]: A

[EX Q]: [header] How to charge a kindle [title] Plug your computer or laptop into an outlet. [step] It should be connected to power to ensure it will have enough battery to charge the kindle. [title] Turn your computer on. <sep> (A) [step] Make sure your computer is set to boot up. [title] Perform a search for " amazon.com this kindle is something special. (B) [step] You will need to leave the computer on and avoid stand-by or hibernation mode during the charging process. [title] Find the micro usb cable that came with your kindle. (C) [step] Tell your parents or teammate you want to charge your kindle. If you share a pc, both computers should have their respective terminals plugged into a outlet. (D) [step] Look for a chroma-emitting device, such as an iphone or ipad. [title] Check to see if your device is compatible with bluetooth or wi-fi.
[EX A]:
B