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 clean a cast iron stove [title] Place an old newspaper on the ground in front of the stove. [step] Do this as a protective measure before you begin scooping ashes out of the stove, as they are liable to drop onto the ground. A newspaper will make cleanup much easier. <sep> (A) [substeps] You might even want to splash some cold water over the newspaper, so the water completely freezes around the newspaper. A drop of lemon juice can also help. (B) [title] Pour about a tablespoon of salt into the newspaper you have saved. [step] Add lemon juice and shake off the salt. (C) [title] Use the newspaper to wipe and scrape any soot out of the cast iron burner. [step] Do this several times until any soot is gone. (D) As you're spreading the newspaper, open the air dampener so that any ash stuck to it will fall into the firebox. [substeps] The air dampener will be a small knob on the front of the cast iron stove, that you should pull outward to open.

Ex Output:
D


Ex Input:
[header] How to protect yourself from replica watch websites [title] Use your credit card. [step] Not your debit card, but your credit card. [substeps] The only payment method you should use is credit card. <sep> (A) Using a credit card only licenses you to pay for certain services, such as security clearance. Also, you can get a replica watch at the store. (B) Then you'll pay with cash or check. If cash cannot be reached, that means that your account is not secure. (C) If you want to shop around, try to use a credit card, as they don't grant these types of deals. For example, you can use a credit card to buy super priced watches, but in return they must be an anniversary gift. (D) This is the only payment option that protects you from internet scams. Why? Because your bank has your back.

Ex Output:
D


Ex Input:
[header] How to make green beans [title] Bring a pot of water to a boil in a saucepan over medium-high heat. [title] Add salt to the water once it begins to boil. [title] Trim the stems of the green beans and place them into the pot of gently boiling water. <sep> (A) [title] Once the water boils, drop 1-inch (2.5 centimeter) stems of 1 1/2 pounds (2.35 grams) of green beans into the boiling water. [title] Wait until the green beans are ready to be processed. (B) [step] You will need one green bean per cup (260 ml) of boiling water. [title] Add the green beans to the pot. (C) [title] Add ground bell pepper, thyme, and basil to the water for the next step. [step] Stir the green beans in with the salt until everything is evenly combined and the bean pieces are tender to the touch. (D) [title] Leave the green beans in the pot for 4 or 5 minutes, until they are cooked but still crisp. [title] Drain the green beans and cover them in ice water to stop the cooking process.

Ex Output:

D