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 buy a wood burning stove [title] Consider your heating needs by evaluating the size of your home. [step] You will need to determine the heat load necessary to maintain the square footage of the area you want heated. Heat load is measured in btus, or british thermal units. <sep> (A) Inquire about btus and thermal units using online resources. [substeps] Btus heat packs can be found at home improvement stores, department stores, and some gas stations. (B) To determine how much heat you need, pay attention to the dimensions of each room you intend to fire in. [substeps] The larger the square footage, the larger your fire seats will need to be. (C) You will need 25 to 30 btus per square foot. [substeps] Measure each room to be heated with measuring tape. (D) Btus are rated from 2000-1000. Btus can be changed or altered depending on the size of your home.
[A]: C

[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

[Q]: [header] How to clean suede gloves [title] Check your gloves' care tags. [step] Before you begin cleaning your suede gloves, check the care tags. There are a lot of different types of suede and suede finishes, and each type has different care needs. <sep> (A) Learn about each individual suede product and its care signs to ensure you make the right cleanser. [substeps] The care signs for gloves should be number 1 or the latest amount and level of use. (B) The tags should tell you the best process for cleaning your type of suede. [substeps] For example, you should not use water on very fine suede, since the water will likely stain it. (C) You should check these care tags to see if your item (or product) specifically needs to be cleaned or pressed before caring for it. [substeps] You can check your care tag by pulling out a cardboard box or hand-washing it in your washing machine. (D) Items like suede pots, pans, and bins will have different care shots you must follow. [substeps] Ask the retailer to make a call or to send you your basic cleaning kit.
[A]:
B