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 create a beauty regimen for oily skin [title] Make sure that your skin is oily and not another type. [step] Do some research on the topic. Whether it be online or with a dermatologist. <sep> (A) What does the oily undertone mean to you? How can you get rid of it in appearance and makeup? [title] Consult a dermatologist. [step] See if they would recommend a beauty regimen for oily skin. (B) Look for people who specialize in beauty products like foundation, moisturizer, primer, and eyelid gel and prepare with them. You will probably want to know if your pores are smaller or more visible. (C) You may think you have oily skin, but you may have combination or normal skin. [title] Look for products in stores suited for oily skin. (D) Make sure that your skin is dry and that it is scrubbed with a gentle cleanser, toothbrush, or a mild moisturizer. [substeps] Ask the dermatologist to examine your skin to get an idea of its ideal oil levels.
[A]: C

[Q]: [header] How to determine who has right of way [title] Come to a complete halt at a stop sign or red light. [step] At a stop sign, come to complete halt for about 2 seconds or until vehicles that arrived before you clear the intersection. If you're stopped at a red light, proceed when the light has turned green. <sep> (A) This will give you enough time to catch the light and clear the intersection. [substeps] Vehicles behind or behind you may not brake. (B) This blocks oncoming cars from passing you. [substeps] If in doubt, you can also tell if you're going too fast by looking ahead at the tires of that car. (C) If you are stopped before a red light signals for another vehicle, you're on your own. [substeps] This means every car crossed before you has passed, and every vehicle in the intersection has stopped before you. (D) If the intersection has a white stripe in your lane, stop before this line. [substeps] If you have a stop sign, but the street you're crossing does not have a stop sign, wait until all traffic has cleared before crossing the intersection.
[A]: D

[Q]: [header] How to buy a ceiling fan [title] Measure the length and width of the room. [step] Before you go ahead and buy your new ceiling fan, there are a number of factors and variables that you need to take into account. The first of these is the size of the room you are buying the fan for. <sep> (A) The size of the room a fan fits comfortably in. [substeps] Take the height and width of the room into account. (B) [substeps] Ideally, the ceiling fan should be at least as wide as the room's ceiling area. However, in large rooms, it can be as wide as the space between the ceiling opening and the wall of the room. (C) Calculate these by weighing the ceiling fan at a traditional estimate of its height and width. [substeps] Btus is the height of the ceiling fan's widest edge (known as the flat edge). (D) To make sure that the fan works effectively you need to ensure that it is big enough for the space. [substeps] Get hold of a tape measure and determine the length and width of the room.
[A]:
D