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 be a bondi lifeguard [title] Contact a surf life saving club in or close to bondi. [substeps] Just about anyone can volunteer to be a lifesaver at sydney surf life saving clubs. Surf clubs will be happy to chat to you and tell you what is required if you want to be a volunteer lifeguard. <sep> (A) [title] Find the best and safest surf-life saving club in your area. [substeps] Surf lifeguards live off the beach, and they will probably need two-way water transportation, quite possibly a car or bicycle. (B) Many will provide all the training you'll need. Call them, check out their websites or simply head down and chat to them. (C) This can be achieved by attending the lifesaving club on the first day, then going on to other lifeguard's clubs along the way. If there are lifeguards at any of their lifesaving clubs, talk with one of those lifeguards. (D) This is the only legal aspect of volunteering. They will be able to suggest hours of work that are perfect for you or your specific lifeguard job.

Ex Output:
B


Ex Input:
[header] How to assemble an emergency roadside kit for a desert climate [title] Prepare for car repairs [substeps] Include foam sealant or a battery-powered air compressor in your desert roadside kit. These will aid in a quick repair in case of a flat tire. Also store an extra jug of coolant in case your car overheats. <sep> (A) Supply any diicer you won't need to replace whenever your car loses power. A small backpack with flexible, flexible, and weather resistant backpacks are more critical. (B) Carry jumper cables and a tire jack in your car trunk at all times. [title] Stay hydrated [substeps] The temperature of the desert will be one of your worst enemies if you get stranded in a roadside emergency. (C) Using heat-powered oxygen pumps, burns fuel, or compresses materials may be delays during basic car repairs. [title] Obtain specialized supplies [title] Find the correct car mechanic. (D) [title] Buy a driver's side cooler. [step] Gas stations and convenience stores are excellent outdoor places to pack.

Ex Output:
B


Ex Input:
[header] How to grow flowers from seed [title] Get a container that has drainage holes in it. [step] If you want to grow multiple flowers, you can purchase an indoor planter that has spaces for more than one flower. It's important that the container has drainage holes because overly saturated soil will inhibit the seed's growth. <sep> (A) [substeps] You can purchase a container with holes, such as the back of a garbage can, or a seeding container. The container should be deep enough to allow flower roots to drain free. (B) [substeps] If you don't want to buy a planter, you can punch holes in the bottom of an egg carton and use that instead. Put a rag or cloth under the container to prevent leaks. (C) If you're planting flowers inside your garden, find an indoor planter that has drainage holes. [substeps] If planting multiple flowers in a row, get a larger container, if possible. (D) Water your planter again to make sure that it has drainage holes again. [title] Take the flower stem in your hand and gently hold it over the flower.

Ex Output:

B