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 transport breast milk [title] Ask about the terms of transport. [step] If you are sending your breast milk to a company, such as a breast milk bank, ask in advance about the terms of transport. Questions to ask include : [substeps] When does the milk need to arrive? How long can it take to get there? Does the company accept milk packed with dry ice? If so, in what quantity? [title] Use fresh milk. <sep> (A) [step] Milk is changed on a daily basis. Most manufacturers now sell their new milk cold, rather than reheating it in the microwave. (B) [step] Do not store a whole breast of milk in the microwave. Instead, fill a jug filled with fresh milk and microwave it on high heat for 30 to 60 seconds. (C) [step] You can find fresh milk in some commercial stores in bulk. Be careful of doing so; it may cost a considerable amount of money. (D) [step] If you are going to ship breast milk, make sure it is fresh. Either pump it immediately before mailing, or remove the correct amount from the freezer.

Ex Output:
D


Ex Input:
[header] How to prune dracaena [title] Prune your plants in the spring before they hit the growth period. [step] From april to may, your dracaena plant comes out of rest mode and gets ready to go into the blooming season. Pruning your plants before they hit the growth period keeps them healthy. <sep> (A) This also makes it easier to shape the plants into your ideal look. [substeps] While you can prune your dracaena whenever you'd like, this helps encourage new, healthy growth. (B) [substeps] Dig around your plant and dig through the leaves and stems. Then, break or slice up any missing leaves or stems. (C) Cutting back all the flowers is absolutely essential to maintaining the stage of the plants that produce most of the foliage and fruit. [substeps] Your herbs should be pruned throughout the spring rather than the summer as this can cause them to produce fewer blooms and appear stunted. (D) It promotes a firm, healthy growth cycle for the plant. [substeps] Use a small garden pedometer to determine how many plants you should prune.

Ex Output:
A


Ex Input:
[header] How to make better looking images on ipad using photopal [title] Download photopal. [step] Access the app store from your ipad or computer and search for « photopal ». Tap on purchase button and get the app for $2.99. <sep> (A) [title] Go to https: // photodomain.com /. [step] Locate the installation details of photopal express from the app store that you want to install. (B) Tap on tab] bring photopal with you. [substeps] You can also download it from https: // photodomain.com/home. (C) [title] Start using photopal by loading an image into app. [step] You can take the image from photo album, clipboard, you can go back the image you've edited during last session, or you can use the photopal docs feature. (D) [substeps] This app is entirely for android only. [title] Find make-up works for you.

Ex Output:

C