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
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Q: More shots are shown of a website as well as the outside of the shop while the men continue to speak. more people <sep> (A) then arrive to take pictures and a bored man is unable to participate. (B) are shown drinking coffee as well as sit in front of their computer talking and participating in the board as well as meeting with one another and riding in a raft. (C) are seen getting tattoos while the men still speak to the camera. (D) are then seen controlling a large group of horses and leading them around a very large gate as well as running underneath it and bumping into the fences.

A: C
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Q: [header] How to take alpha lipoic acid [title] Ask if ala is a good choice for you. [step] Before starting any supplement, you should always consult your doctor first, as supplements can have side effects and interactions. For instance, ala can lower your blood sugar levels, which can be dangerous if you're diabetic. <sep> (A) [substeps] Some doctors are not experts in how supplements interact with regular medications. If yours isn't, consider visiting a doctor who also specializes in alternative medications. (B) [substeps] Similarly, ala may make your genital area feel hot and uncomfortable. Overuse of the supplement can also cause bleeding, swelling, and an associated rash. (C) [substeps] If you're prescribed ala for diabetic treatment, ask your doctor before taking ala. Ala can interact negatively with other medication if you don't have more than 2 times normal doses of ala on your daily medication or through any supplement you're taking. (D) Ala should be avoided until you first start to take it for its effect on your thyroid. [substeps] In some studies, ala users report lower blood sugar levels for, say , 45 to 60 mg most days.

A:
A
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