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 start a nanny business [title] Get a list of prospective nannies. [step] Advertise in newspapers, online ads, put signs up, and give flyers. If you have experience in child care, solicit coworkers and contacts to see if they are interested in providing nanny service or if they know others who would. <sep> (A) Online groups like the sunshine and children's network are great places to begin looking. Be sure to approach your current employer, perhaps to ask if they know of a nanny who would be willing to offer you a job. (B) Also keep in mind if someone does not want a flyer they are not interested so don't bug them they might spread the word, ruining your business. [title] Do a thorough background check on each candidate. (C) [substeps] Make sure to get a roster in question. Nanny cannot become a nanny, but a general guideline for a daycare provider's operations is to have several nanny's staff. (D) Maybe advertise with a school newspaper or with individual business cards. If the nanny is from a more prestigious family, contact them later so they can accept your offer.

Ex Output:
B

Ex Input:
A man is talking on a basketball court. he <sep> (A) picks up a bottle of water and takes a drink of the water. (B) shows how to play the volleyball. (C) then demonstrates how to throw a ball to the goal. (D) starts hit by the ball.

Ex Output:
A

Ex Input:
[header] How to avoid common composting mistakes [title] Avoid placing animal products into your compost pile. [step] An easy composting mistake can be avoided by leaving fats, dairy, meat, and bones out of your compost. These materials will go rancid and generate unpleasant odors as well as attracting rodents and other unwanted animals to your compost. <sep> (A) [substeps] Common organic composting items include eggs, fish, pork, corn, white rice, kidney beans, and chicken. Avoid sharing bones or bones of animals, such as chickens, pigs, squirrels, and rabbits. (B) Meats and dairy also provide a breeding ground for harmful pathogens. [title] Ensure that the moisture level in your compost pile is ideal. (C) Resist the temptation to put meat or dairy products in your compost pile. This will keep your compost pile warm and healthy and may prevent rodents from filling or eating your compost pile. (D) Using animal products such as chicken manure or sawdust is a safer bet. [substeps] Possible alternatives include a trash can or large plastic pail beneath your compost pile.

Ex Output:
B