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 large group of people are seen moving around on exercise bikes. the group <sep> (A) kicks around one another while others watch on the side. (B) move together while the camera pans around. (C) moves around the road and jumps on and off the exercise bikes. (D) rides around, bumping into one another.
Example Output: B

Example Input: They are traveling to the event together and check into a hotel. The entire team spends time together before the event. two of the team members <sep> (A) are quick to start and begin to fence. (B) play volley ball with the team mates. (C) talk about their experience with the water polo event. (D) are dressed in some sort of uniform and they run on the stage and join the march.
Example Output: C

Example Input: [header] How to install flagstone [title] Plan your project. [step] To decide how much stone to buy, you'll need to calculate the square footage of the area you plan to cover. You'll also need to make sure your project is safe and legal before you expend your time, energy, and money on it. <sep> (A) Don't forget that you need to complete unfinished projects whenever you're working without enough capital to cover your purchase. [substeps] As a rule of thumb, work a lot of work to complete before you buy additional stone. (B) Visit this map to determine how much stone you will need to work with. [title] Scout out stone shops on the block. (C) [substeps] Start by consulting local building codes to make sure your planned project doesn't violate the law. This information should be available on your city government's website. (D) Plan for the length you will need to build the sculpture, as well as the size of your concrete slab. [substeps] Roughly 200 square feet means that the " sculptured " slab will likely be larger than the " non-slab " slab.
Example Output:
C