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: [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.
Example Output: B

Example Input: We see a person sharpen a knife on a sanding disc. The person touches it and turns it off. The person turns it on and then off off. we <sep> (A) see the person sharpening the knife on a cookie sheet. (B) see a man run in slow motion. (C) then see the title screen. (D) see the man talking to the camera.
Example Output: D

Example Input: [header] How to kill english ivy [title] Get your equipment ready. [step] The most important tool you'll need in order to kill ivy is a sharp pair of clippers or loppers, depending upon the thickness of the vines. Older vines can grow as thick as one's arm, while newer vines are as thin as flower stems. <sep> (A) A smooth, sharp pair of garden clippers is the best pack for any type of ivy and is all you need to get the job done. [substeps] For vines, push your clippers down into the vines and using single force pull them away from the vine. (B) In addition to gathering appropriate cutting supplies, put on a thick pair of gardening gloves to protect your hands as you pull the ivy back. [title] Cut the vines around the base of the tree. (C) Now is the time to get your supplies. [substeps] This method will also work for vines that have been laying around the house for a long time. (D) If you have trouble getting a normal pruning staff or axe, you may want to consider getting a hand pruner and other bladed items. [title] Cut the vines to an inch (2.5 cm) apart.
Example Output:
B