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 buy a blackhead remover [title] Learn your options. [step] You should not squeeze or pick at blackhead, as this can lead to infection or scarring. However, you can remove pesky or unsightly blackheads with several different types of products that may not necessarily irritate your skin or require treating it with chemicals. <sep> (A) Learning your different options can help you identify the best product for your specific blackhead removal needs. Products that can remove blackheads include : [substeps] Extractor tools pore strips clay masks topical creams [title] Identify the best remover for your skin type. (B) For example, cleansing a burnt face can peel pores, like blackheads, and subtly remove blackheads. Deep pore pimples, which are a common factor for blackheads, are not tended to dry out. (C) [substeps] Avocado, keratin, and brewer's yeast all work well in reducing the inflammation and scarring of blackheads. [title] Pick a chemical neutralizer for stubborn blackheads. (D) Some of the well known brands that are known for their blackheads include tootane, steam, huawba, and celandine. As noted above, these products are more environmentally friendly than other skincare products, especially for those kids.
[EX A]: A

[EX Q]: [header] How to effectively use email at work [title] Allocate specific times of the day to read and respond to your e-mail. [step] If you don't stay in control of checking your e-mail, you may end up wasting too much of your work day checking it. Try to respond to emails immediately. <sep> (A) While you can use your email system to get more emails, remember to adjust your work email usage to accommodate any change in time. [substeps] Use social media to check your e-mail and read your e-mail. (B) [title] Organize your email whenever you are in it. [step] Effective use of work email includes deleting emails you know you won't need as you read them and filing those that you will need in specified folders. (C) Staying in control of your personal email should be your top defense when handling an in-office correspondence. [title] Identify your e-mail's subject line. (D) Or try to set an automatic schedule to read them at other times. [substeps] Plan to read at least once a day, unless you work on a busy schedule.
[EX A]: B

[EX Q]: [header] How to kite fish [title] Get a kite-fishing kite. [step] A kite-fishing kite is a square kite designed specifically for kite fishing. You'll fly the kite in the air with your bait lines attached. <sep> (A) When you're just starting out, look for a kite made for wind speeds ranging between 6-15 mph. [title] Buy a kite reel to hold the line your kite is tethered to. (B) [substeps] This can be " free cast " or " knot-free in the air. " you can buy kite-fishing kits at most sporting goods stores. (C) The fish tails at the bottom are connected to spinnerbaits, which are the rubber bands that are formed around the bait line. To kite fish, you'll need 10 to 20 hooks. (D) You'll use a lever at the bottom of the kite to direct the line to point at the bait. Don't use fishing nets that are too heavy to fly in the air.
[EX A]:
A