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: A man walks into a room. the man <sep> (A) is then sitting at a table, taking out sock remotes and tools. (B) begins to smooth plaster on the wall. (C) twists the objects made from pieces of wood. (D) is dozing and waking with his arms outstretched.
Example Output: B

Example Input: [header] How to do chest exercises in yoga [title] Do the mountain pose to warm up, plus a couple of humming bee breathing exercises. [step] These will get you ready to stretch out your body in the variety of poses you'll use to exercise your chest. Notice your breathing pattern as complete the mountain pose. <sep> (A) Inhale and keep your breathing slow and even throughout the whole warm up period. [substeps] Alternatively, do a crossfit pose to warm up. (B) [substeps] You might try taking an extended pause to " use " your rib cage, start to breath in, breathe out, and repeat. You can also try practicing your opening pose from a hovering yoga chair, at home, or in a pose at your workplace. (C) Settle on a consistent, slow pattern of breath as you start the workout. This breathing pattern will help calm yourself and prepare your heart rate for the more difficult exercises to come. (D) [substeps] After doing the mountain pose, you can do finger circles or kangaroo standing pose to warm up the muscles in your chest. [title] Do the rock dii to strengthen the core.
Example Output: C

Example Input: [header] How to collect email addresses [title] Create a sign-up sheet. [step] If you have an actual storefront, place an e-mail sign-up sheet near the register. Point it out to each customer who makes a purchase. <sep> (A) This will hold the full month's sales price because the business's members will not need to sign-up. Plan to take into account the current set of needs for the business as well as the current challenges it may face financially. (B) Sometimes you may also wish to advertise by adding the name of your company into the business sign-up sheet. [substeps] For example, if your office features a storefront, point your e-mail door in that direction. (C) [title] Copy e-mail addresses from customers instead of typing them in. [step] Print off enough e-mail addresses to collect as many e-mail addresses as you want from everyone but your customer. (D) [substeps] Similarly, you can instruct your cashiers to ask each customer who approaches the register for an e-mail address. Make sure that your cashiers tell your customers that providing an e-mail address is only optional while explaining the benefits of doing so.
Example Output:
D