instruction:
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". 
question:
[header] How to numb a tooth [title] Take an over-the-counter-painkiller. [step] A painkiller like ibuprofen or acetaminophen should be your first step in trying to numb a painful tooth. These painkillers will alleviate the pain from your tooth, and should also decrease any swelling in the infected area. <sep> (A) [substeps] If you are not able to find ibuprofen, you can opt for acetaminophen instead. [title] Freeze food that contains aspirin. (B) [substeps] Ibuprofen can be applied within 30 minutes to up the duration of an over-the-counter painkiller. Follow the manufacturer's instructions and do not take ibuprofen within 30 minutes after it has been applied. (C) [substeps] Make sure you read and follow the dosage on the packaging. Do not eat anything until told to do so by your dentist to ensure you are following the proper dosage. (D) These are all readily available at your local pharmacy. [substeps] If you're treating a toothache in a child younger than 18, do not give him or her aspirin.
answer:
D


question:
[header] How to talk minnesotan [title] Change the pronunciation of the vowel " o " in your speech. [step] Contract the corners of your mouth to form a round shape with your mouth before phrases like " oh dear " or " minnes-ohhh-ta " and extend the emphasis on this vowel. [substeps] This is a similarity to canadian accents in some areas. <sep> (A) Practice by saying the word " sound ". While it only has one syllable and can be said quickly, a minnesotan might say " s-ownd " or " s-ow-und " as a part of regular speech. (B) [title] Ask your audience to look at your tongue. [step] Take them in your hand and draw them to your lips. (C) It doesn't require any translation to accurately change the pronunciation of a vowel. [title] Make enough new words in a typical conversation. (D) For example, " ola-o'-kah-yar-mah " or " la-yesterday it was el-chee-yay. " adjust this accent to your speaking throat.
answer:
A


question:
[header] How to prepare mashed potatoes [title] Peel the potatoes. [step] After you wash the potatoes thoroughly under cool water, use a sharp knife or a potato peeler to peel off the skin. You can also keep the skin on yukon gold or red skin potatoes, if you like, but baking potatoes should be peeled. <sep> (A) [substeps] Peel the potatoes if you decide to peel them. Puree the potatoes instead of peeling them. (B) [title] Heat oil in a large skillet over medium heat. [step] Turn off the heat and add the oil to a large skillet. (C) [title] Boil the potatoes in a large pot of water. [step] First, boil the water by itself, adding a pinch of salt. (D) [substeps] Peeled potatoes, then with a fork, mash them. Pureeing for several days will ensure that it doesn't spoil, and more importantly, it's an easy and healthy way to roast the potatoes.
answer:

C