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:
We see a person sharpen a knife on a sanding disc. The person touches it and turns it off. The person turns it on and then off off. we <sep> (A) see the person sharpening the knife on a cookie sheet. (B) see a man run in slow motion. (C) then see the title screen. (D) see the man talking to the camera.

Ex Output:
D


Ex Input:
[header] How to ask customers for feedback [title] Use a survey. [step] Surveys are the easiest method for collecting feedback. You can create a survey on surveymonkey and then send an email to your clients. <sep> (A) You can also post a link to the survey on your twitter and facebook pages. [substeps] Consider posting short surveys on your website using qualaroo or an equivalent tool. (B) This gives you a much-needed opening to discuss your feedback. [substeps] Write a survey that states how well the company is doing. (C) Keep in mind that you are going to be giving customers feedback about your company. The survey can be in the form of a written question or business letter, a presentation or post, or forum. (D) Be sure to include your real name so that the survey can be retrieved and someone else can reach out to you if needed. Customers then will be able to find you and send you back their feedback.

Ex Output:
A


Ex Input:
[header] How to buy turkish carpet [title] Determine what kind of turkish rug to purchase. [step] There are 2 basic kinds of turkish carpets: a kilim or a knotted carpet. [substeps] Choose a kilim for a less expensive alternative. <sep> (A) A wrapped carpet to sit on the couch. Well groomed people can have the latter. (B) The kilim style carpet grows frequently in homes and ceilings so it would be better for a home that has many people and a lot of full furniture. Turkish carpet companies have huge surplus that makes it a good option for someone who wants to transport twice as many carpets. (C) The kilim is made from sturdy and flexible-you can buy the side-length kind. Most turkish rugs are knotted, so this would be a better option for someone who needs a rug to accommodate his bulk. (D) A kilim is a flexible, woven rug that can be folded. It has no backing, and can be used as a furniture covering, blanket, wall hanging or rug.

Ex Output:

D