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:
A woman stands behind a bar and talks to the camera. The woman then takes a glass an puts it on the bar. the woman <sep> (A) screws a cocktail shaker onto a lemon wedge and pressing the lemon wedge back and forth. (B) begins making a cocktail. (C) takes a bucket and turns it upside down. (D) then pours liquid into the glass with ice after.

Ex Output:
B

Ex Input:
[header] How to buy a light kit for photography [title] Make a list of required and/or desired criteria for your light kit. [step] These features include whether you want lights arranged on the floor or ceiling, what kind of photography you will be doing, how many lights you will need, etc. [substeps] Floor studio lights and backgrounds can be transported and arranged on stands or supports. <sep> (A) You may want several different lighting items in one kit. There are many available but most of the light hardware items, like dimmer switches and binders or small set of battery-powered lights, should be picked up at a craft store. (B) Pointed, straight, or one-sided lights can be divided into categories and arranged on tables or on poles. [title] Purchase fixtures that fit the gender and the type of lighting and coloring range that you want to consider. (C) Ceiling lights are more expensive and must be on a rail system for positioning in a rectangular area while background rollers are mounted on the ceiling. Your type of photography can determine how much light you need. (D) Frame sizes can be adjusted to your personal preference depending on the size of your studio. Don't forget to read the product description as well.

Ex Output:
C

Ex Input:
[header] How to ask someone for a recommendation on linkedin [title] Find the profile of the user you want a recommendation from. [step] Once you've pulled up the user's profile, look for the "...more " icon at the top of the page to the right of their photo. From here, you'll be shown a list of options for how you can interact with that user. <sep> (A) [substeps] You can also request recommendations by accessing the " manage recommendations " page directly from your user profile. The more connections and accomplishments the person recommending you has, the more force their endorsement will have. (B) [title] Click on the options when you're done searching. [step] A sheet of paper will appear with all of the selected options. (C) [title] Find the contact you want to talk to about linkedin. [step] Once you have highlighted one of the options, type in " @linkedin. (D) [substeps] There are two basic types of recommendations on linkedin. Requesting a recommendation from someone friend of yours is straightforward, while requesting a recommendation from someone else is complex.

Ex Output:
A