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 choose the best hula hoop (adult sized ) [title] Measure your height from the floor to your belly button. [step] This measurement will then help to determine the diameter of the hoop you should purchase. The hula hoop, when resting vertically on the ground, should reach somewhere between your waist and mid-chest. <sep> (A) [substeps] Example: if your height is 36 inches (76 "), then 118 inches (77 ") would be the minimum height. For kids, this would be 24 inches (76 "). (B) This is your base diameter measurement and can be adjusted slightly depending on your size and experience level. [substeps] For example, most adults will begin with a hula hoop between 40 and 44 inches in diameter. (C) [title] Find a hoop that you know you can balance on. [step] This will improve the stability of the hoop and prevent you from accidentally dropping the ball while on it. (D) Your waist should be about an eighth of an inch shorter than the hoop. You should also measure your waist from hips to ankles, and to knees with a ruler or measuring tape.

Ex Output:
B

Ex Input:
[header] How to remove malware [title] Understand that viruses, trojans, worms, spyware and bots are all malware that can damage your system. [substeps] A trojan is software that may look legitimate, but tricks you into downloading it. It then activates, and can delete files and steal data or give the perpetrator access to your system. <sep> (A) An administrator is a person with whom you can password protect your database. A trojan is a type of perpetrator that can use your database, copy and resize, hack into users' databases and earn your trademark. (B) [title] Verify that your computer has a dedicated shutoff defroster. [step] In theory, you would press the power key to turn it on and off while running the software program. (C) Helix can easily catch this software, so make sure you are safe. [title] Find the error button and quickly click on it in the settings section. (D) A rootkit can be downloaded unknowingly along with other programs that you install. It can hide on your computer and can avoid normal means of detection.

Ex Output:
D

Ex Input:
[header] How to knit (for kids ) [title] Start with a simple project. [step] Everyone starts out knitting simple projects to learn the basics and build up their skills. Make it easy on yourself by choosing a knitting project that will let you practice basic skills and that won't take too long to finish. <sep> (A) Focus on simple, less complicated projects so that you don't get overwhelmed. [substeps] For example, you may want to start with knitting on upholstery. (B) Once you're used to doing basic knitting projects, you can gradually build up your skill level (or at least increase how much time you spend researching the subject each day). [title] Begin with a 20-to 30-point-length test. (C) [substeps] Try looking at tutorials and flyers from arts and crafts and see what shows up for you. After you've done some research and created a few patterns, choose the one that will suit your new set of stitches. (D) Some good starter projects include : [substeps] A washcloth a scarf a doll's blanket swatches [title] Look into starter kits. [step] You can purchase starter kits that are meant for kids.

Ex Output:
D