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". 

[Q]: [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.
[A]: B


[Q]: 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.
[A]: B


[Q]: [header] How to control breathing while running [title] Determine the intensity of your run. [step] Since you won't always be running at the same speed, you should implement breathing techniques that suit the intensity of your workout. Think about whether you're going on a quick jog or training for a marathon. <sep> (A) Your breathing might be slower and more natural for an easy session, whereas you'll have to take a more structured approach for harder runs to make sure you don't get exhausted too quickly. [substeps] It will be especially important to keep your breathing under control during tougher runs. (B) [substeps] If you're running a mile, pace yourself by working your way up to faster. If you're sprinting, keep your pace as low as possible and for normal intervals. (C) These are a step-by-step design and keep you running in a safe and consistent manner. [substeps] Running shorter or longer sets of steps is a great way to burn calories and keep the necessary amounts of fluid in your body circulating. (D) [substeps] Have a breathing partner guide you through the steps. This person can tell you if you need to change directions or zoom back in if you're losing ground.
[A]:
A