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 introduce a pleco to a goldfish tank [title] Ask how large the pleco will grow to be. [step] Although most pet stores will sell plecos that are only a few inches in length, you should know that they can grow quite large. Fully grown plecos can reach up to two feet in length. <sep> (A) [title] Check your tank's surface before you place the pleco into the tank. [step] Make sure that your aquarium is opaque or has a drop-down tray so that your pleco is not exposed to water. (B) This can have a negative impact on their lifespan. [title] Choose a tank with large walls and no air holes. (C) [title] Make sure you cover more than twice the tank. [step] If you find that your pleco grows too much, cover the entire tank with a blanket. (D) The exact size of the pleco will vary depending on the species. Ask someone at the pet store how large the pleco will get before making a purchase.
[EX A]: D

[EX Q]: [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.
[EX A]: A

[EX Q]: [header] How to enjoy fashion [title] Take inventory of all the clothing you currently have. [step] Separate the clothes you like from the clothes you do not like. [title] Examine the clothing you like. <sep> (A) [step] If it's still too new or high maintenance, or if it is not as fashionable as you'd like, consider a different sport or new colour. Even if that means buying less, you might still find some essential features in the clothing. (B) [step] Look for similarities and ask yourself why you like each piece. You may like the way it flatters your shape, or maybe you like it because of the material or pattern. (C) [step] Do you like the dress or dress length? Do you look great or look amazing? Is it a different style that might have a different function? If you do not like the dress, price your material at sales and reevaluate. If you like a dress but do not enjoy the dress, buy a suitable dress for wearing. (D) [step] Is it a flattering item? Are they reasonably good? Be specific about what you like and do not like or dislike. [title] Make a list of all of your favorite styles.
[EX A]:
B