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 dry a dog [title] Allow the dog to air dry naturally. [step] This is the easiest and most enjoyable way for the dog to dry. After getting wet, the natural reaction of many dogs is to shake from side to side with great vigor to release the water. <sep> (A) Dry the dog by waving a towel near the dog and holding it in front of him as you shake. Dry dogs naturally shake after an accident, while dirty dogs are especially prone to shake from side to side. (B) This helps air to flow through the dog's body and speeds the drying process. [substeps] Letting your dog dry upside down with its chest out can help with this. (C) In less than 4 seconds of shaking, dogs can shake up to 70% of the water from their fur. [title] Stand back and allow the dog to shake the water from his or her fur. (D) To encourage this, your dog has to naturally dry themselves faster because you are taking a short nap before allowing him to dry itself. [substeps] Wait until after a shower or bath to air dry your dog.
[EX A]: C

[EX Q]: [header] How to support an ngo [title] Donate to your favorite ngo (s). [step] This is the most obvious way to support ngos because they can never get enough funding for materials, resources, and services they need. [substeps] Some organizations offer items and prizes for donating certain amounts of money. <sep> (A) They also give you the ability to provide special services around certain achievements. If you are in a condition where you are young, you may qualify for donation. (B) Most ngos will have a donation page on their website where you donate online with the option to set up a recurring monthly donation. You can also donate through the mail or in person if the organization provides an address. (C) Some nonprofit organizations may always have people applying to volunteer so they can offer funding or participate in trips to the ngo. Other organizations find big travel and personal donations to help their causes. (D) Older organizations such as https: // www.ngov/groups/help-national-ngos/are a great place to help donate. Then, you can convert an ngo to your own credit card, ngo register it into a paypal account, or find a bank with a dedicated credit card account.
[EX A]:
B