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". 

Q: [header] How to find the number of a blocked call [title] Get an private branch exchange (pbx) account. [step] One option is asterisk, a free, open source software. Another is switchvox. <sep> (A) This will also work better than 200 blackwire. If you buy one, it will work with the same account ($ 0.11). (B) The pbx is considered to be a free exchange. While this service typically does not have much use for a desktop account, it gives you access to many anonymous call accounts. (C) A pbx converts your computer into a telecommunications device and will allow you to manipulate incoming call data to identify blocked callers. [substeps] Before embarking on this method ensure that you thoroughly understand the technical challenge it presents and the potential financial burden it incurs. (D) Without switchvox here you are on better business. No other option is available to get a contact number from an online website.

A: C
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Q: A large dog and two small dogs are walking. Two of the dogs are tied together. a woman <sep> (A) walks next to them holding a leash for the other dog. (B) gets the dogs racket. (C) walks up to the dogs and ties their hands behind their back. (D) is trying to free the others, so one falls power washing.

A: A
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Q: [header] How to prevent body acne [title] Wash your skin with a gentle cleanser when you bathe or take a shower. [step] Choose a cleanser that is meant for sensitive skin. Harsh cleansers may irritate your skin and cause or intensify your existing acne. <sep> (A) Use one used for medium to sensitive skin. [substeps] Facial cleansers, also known as gels or benzene products, should only be used if you have sensitive skin. (B) Avoid scrubbing or using exfoliating products or toners on the areas where you get body acne most often. [substeps] Take a shower after you get sweaty to prevent your pores from getting clogged. (C) Use a gentle cleanser to clean your skin, using circular motions. [substeps] Use a non-comedogenic cleanser to take care of your skin. (D) [substeps] Do not wash your skin with acne-causing cleansers. They can also irritate your skin.

A:
B
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