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". 
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Question: [header] How to avoid common glass tile installation mistakes [title] Ensure color consistency behind glass tile. [substeps] Since glass can be the sole material in an installation, it is essential to choose a bonding mortar that meets its unique demands. In most cases, the color of the thin-set mortar was not an issue when installing opaque ceramic tile. <sep> (A) But with clear and translucent glass, the mortar appears through the tile: if the color varies in the mortar, it will in the glass tile too. To eliminate variations across a glass tile installation, choose a glass tile mortar with a bright white shade that is controlled to a consistent standard color. (B) [title] Find a masonry solution solution as described in this article. [step] Masonry solutions used to be sold in commercial suppliers were expensive and less durable than those containing glazed portions. (C) [title] Check your online repair and installation guide for common glass tile installation recommendations. [substeps] If you cannot find the recommended measurements, consult the manufacturer's website or consult the recommended supplies list. (D) Spray glass tile debris on the glass tile before continuing. Rinse glass tile debris with water and wipe the water away.

Answer: A


Question: [header] How to deal with jet lag [title] Carry your medications with you. [step] If you're on an antidepressant, make sure to put them in your carry-on luggage to take with you. Also, make sure you have enough medication to last the whole trip. <sep> (A) If you're going to need more than you have, talk to your doctor about getting an extension on your prescription. [title] Get the amount of sleep you need. (B) If you think you'll have a bowel movement in the plane, keep your medications on hand. [substeps] Make sure you pack a high dosage of anti-diarrheal medication. (C) Additionally, bring any prescription birth control pills, emergency blockers, and any medical or physician required medications. [title] Bring contact information for medical personnel who may be outside of the area. (D) [substeps] Drugs like amitriptyline and terbinafine are both mood boosters, so make sure to have them on hand during travel. If you're on a prescription medication, follow it's dosage recommendations closely.

Answer: A


Question: [header] How to remove chewing gum from a dryer drum [title] Spray pam cooking spray on the gum. [step] It's similar to wd-40 in that it lubricates areas and erodes sticky substances, but it's a natural alternative. If you don't have pam or a spray version of a cooking oil, you can use a bottled version of canola oil. <sep> (A) This will be more acid-free, and will result in less mess. [substeps] This spray is also very acidic, so it may stick to fabric and other fabrics. (B) It's safe to use on wet or dry of the dryer. [substeps] When using pam, try using coconut oil, which is safe to use on wet or dry surfaces. (C) [title] Rub pam under and around gum gum to loosen it. [step] You should see the gum coming away from the crack. (D) Wipe some canola oil on a cloth and rub it on the gum. [title] Soak the gum in the oil.

Answer:
D