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 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 A]: D

[EX Q]: [header] How to deactivate your cat [title] Use this only when necessary. [step] In one study, thirty out of thirty-one cats reacted positively, and none showed signs of pain or fear. Still, your cat may not enjoy it. <sep> (A) [substeps] Read product descriptions to learn how to safely deactivate your cat. Once they have deactivated, they are less likely to be inclined to do it again. (B) For this reason, you will want to give your cat the option of deactivation before extending any line of treatment. If your cat shows no reaction, and no whimpering, do not use this. (C) Some cats're immune to using this solution, though. Think about this: if your cat has not responded to any of the other methods, there is a good chance they like this variation. (D) Many vet technicians consider " scruffing " techniques old-fashioned, and too intense for regular use. Some say this technique is a more gentle option, but this is controversial.
[EX A]: D

[EX Q]: [header] How to make donut holes with yeast [title] Prepare the dry ingredients. [step] Mix 4 cups flour , 1/4 cup sugar, and 1 tsp salt in a bowl. [title] Activate the yeast. <sep> (A) [step] The dough will rise and become fluffy once activated. [substeps] After mixing the wet ingredients with a fork, the dough will rise to roughly the normal texture. (B) [step] Pour 6 tbsp water into a different bowl and 1 1/4 tsp dry active yeast. Let it stand for about 5 minutes, or until the yeast starts bubbling. (C) [step] In a bowl, mix 1/2 teaspoon salt and 1/4 cup yeast. Stir these ingredients lightly in a bowl until you see white foam form. (D) [step] Add together 3 tbsp flour , 4 cups yeast, and 1 1/2 teaspoons table salt. Combine the dry ingredients first and stir in 3 tbsp water.
[EX A]:
B