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 Input:
[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 Output:
A

Ex Input:
A woman standing outside on the roof smoking a cigarette. she <sep> (A) blows the smoke in circles around it. (B) blows smoke and plays around with her hair. (C) rotates her hands back and forth, taking drags off her cigarette. (D) claps one hand while holding a laptop.

Ex Output:
B

Ex Input:
[header] How to follow an after school routine [title] Map out your after school time. [step] The first thing to do if you are making an after school routine is to map out the time between leaving school and going to bed. This may be fewer hours than you imagined, so it's important to have a clear picture of your evenings. <sep> (A) [substeps] At home, make sure that you have a general rule of thumb that you won't leave the house after eight o'clock. Make sure you set your alarm for an hour in advance. (B) Ask your parents for help with keeping a log of what you eat, what you drink, when you cook, what time of day it is, etc. Keeping this to a minimum will make you feel more prepared and smart and help to keep your mind on the good times you have. (C) If you leave school at 3 pm and have to be in bed at 9 pm, you have 6 hours to get everything done, as well as having some time to relax and unwind. [substeps] You can write down a timetable on a piece of paper or on the computer. (D) Divide your time around work, school, holidays, and other aspects of your schedule. The more information you have about your schedule, the less you'll notice and the less of a problem you have.

Ex Output:
C