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 eat to improve fertility [title] Be aware that having a balanced, healthy diet does not guarantee higher fertility. [step] There are many online sources and several books that claim that switching to a more balanced and healthy diet can lead to improved fertility. Though it is always beneficial to eat a healthy diet, it should not replace other fertility treatments and options. <sep> (A) Making sure that you are eating adequate and not too many calories or trans fats can lead to strong, lasting health patterns. In order to see results, eating a balanced diet is essential. (B) The key to avoiding eating more fertility treatments is truly taking in proper nutrients and the exercises you perform regularly. [substeps] Vitamin b6, vitamin b12 and high quality foods like bread and fruits help you to relax and begin functioning properly. (C) [substeps] Healthcare providers believe that we often mistake pre-existing disease as the cause of our fertility problems. These people often mistake their diet as their only sources of positive energy. (D) However, maintaining a healthy diet and lifestyle may reduce a woman's risk of irregular ovulation and could improve her chances of getting pregnant. [title] Keep in mind fertility diets may only work for a small subsection of women.

Ex Output:
D


Ex Input:
[header] How to select a vinyl liner for your inground pool [title] Choose a basic pattern. [step] When choosing the tile line, make sure you choose a basic pattern with natural colors. You can choose various blues, deep beige tones, and grays. <sep> (A) Reds, whites, and terracotta colors stick out. It is not necessarily a good thing is because a vinyl liner is mirroring real tile. (B) You can also choose colors which enhance the cohesion of the walls, giving it a softened feel. Stick with one color that complements the room and feel of your pool; if you use charcoal blue, make sure it matches the shade of the pool. (C) Some great options include : [substeps] Pale blues, ranging from cream to peach. Indigo, such as cream, beige, and ivory. (D) Pick the patterns that complement your pool color. [substeps] Pick patterned herringbone tiles if you have very different colors, like aqua blue, light tan, and jet black.

Ex Output:
A


Ex Input:
[header] How to make a caesar drink [title] Select a glass. [step] Use a large glass, such as a goblet, highball, or pint glass. Basically, the glass should be able to easily hold 10 oz of liquid, or slightly more. <sep> (A) A decanter with a funnel under the underside would work just fine for a caesar. A glass with a squeeze spout will also work, but only with the stem facing the bottle. (B) If you're serving a large group, you may be able to find a different serving size. [substeps] If you're serving a regular amount of people, have at least two smaller (maybe larger) glasses ready. (C) [substeps] You can get different kinds of drinks and styles. Evaluate the following tips for your caesar drink: try sashimi mushroom sauce, kombucha rosano, mojito, ripeno, etc. (D) [substeps] If you are planning on adding a lot of garnishes, you should account for that as well when you choose your glass. You may need a large glass with a heavy bottom just for stability if you want to add a ton of garnishes to the top of your drink.

Ex Output:

D