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". 

Example Input: [header] How to recover deleted pictures from an ipad mini [title] Get your ipad mini's lightning cable. [step] This is the new 8-pin connector from iphone, which is significantly smaller than the previous one. Get this cable and connect the smaller end to your ipad mini. <sep> (A) [title] Hold down the home button on your ipad mini. [step] The process for locking the ipad mini to a computer is easiest with the ipad mini's lightning cable. (B) [title] Get the other end of the cable and plug it into any usb port of your computer. [step] You can plug it into any usb port located either at the back of a desktop cpu or along the sides of a laptop. (C) [title] Connect the smaller end to the power adapter cable. [step] This will work the same way as the icloud usb adapter, except that your ipad mini will have a smaller power adapter just at the back of its body. (D) Some great options are these : [substeps] Usb is for ipad mini micro usb cable. Connect each end to the launcher/usb port on your ipad mini.
Example Output: B

Example Input: [header] How to encourage an autistic person's special interests [title] Check out library books relating to their interest. [step] They can read about their favorite things at their own leisure, without the expense of constantly buying new books. [title] Buy gifts related to the latest interest. <sep> (A) [step] This can be something as simple as fancy designs, or will also be something that you know they'll like. Could be a cool summer smell, a killer crocheted sweater, a great cake recipe, for instance. (B) [step] One good thing you can buy is a stuffed animal. They can attach a cute sign on the front, telling the person where to place the gift. (C) [step] This can be anything from toy birthday items to brochures, catalogs, trophies, and similar. [substeps] Smile at each child when asking them for their gift. (D) [step] This will ensure that they like whatever you give them, and they will feel understood and appreciated. Here are some examples of good gifts : [substeps] Arts and craft kits (e.g.
Example Output: D

Example Input: [header] How to buy an organic crib mattress [title] Check a store specializing in organic goods. [step] Natural health stores or organic retailers sometimes carry products for new moms. If you frequent an organic store with good selection, ask the employees if they carry crib mattresses. <sep> (A) Alternatively, if you're looking for a bed brand that does not use traditional materials, try to save some of your own. [substeps] If you're in the market for a newborn crib mattress, you may be tempted to buy a crate that has togs. (B) Even if they don't, an employee might know local options. [substeps] If you're friends with other eco-friendly moms, ask them where they bought their crib mattresses. (C) [title] Look for a mattress that matches your baby's size and personality. [step] You'll want to make sure it matches your baby's particular needs. (D) You will have to look at the labels to get a good idea of the quality of the product. [substeps] Don't buy a crib mattress that has been washed at least four years ago.
Example Output:
B