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 Q]: [header] How to install a bakflip hd tonneau cover on a ford f150 [title] Place the rail of the bakflip hd on right hand side bed rail of the f150. [step] Slide the tonneau rail all the way forward to the bulk head. It is a good idea to have a squeeze clamp or similar to hold it in place. <sep> (A) [title] Slowly turn the bakflip over so it moves slowly, its going to wobble and have to be bent the opposite way of the rail. [step] Be prepared for a lot of bumping. (B) [title] Tightly wrap round tray socket on right hand rail over cover and fasten. [step] Compression disks complete a swivel mounted over rail. (C) [title] Place the included rail clamps in place. [step] Tighten with a wrench or socket. (D) This will prevent the oil from jumping up and down accidentally while the g2 is being painted. [title] Place the nikon bolt assembly inside the couplers cradle.
[EX A]: C

[EX Q]: [header] How to get into a good secondary school in england [title] Prepare by learning about the schools. [step] Around september to october of the year before you hope to join the new school, you'll want to go to open evenings or open days. These are evenings where the school is opened especially for prospective students to visit the school and take a look around. <sep> (A) Attending these events will give you access to knowledge about the school, find out how to study there, and see what the schools do on the weekends. [title] Break into the traditional role of the school counsellor. (B) You should also prepare by gaining experience in a specific school. These skills can help convince your parents and friends that you fit into a good secondary school. (C) [substeps] The website of english schools in scotland is a good place to start. There are websites specifically dedicated to english secondary schools in scotland. (D) [title] Attend as many of the open evenings as you can. [step] Make sure you organise the dates and get to the evenings with plenty of time to look around-you don't want to be rushed.
[EX A]: D

[EX Q]: [header] How to help protect giant pandas [title] Donate to a conservation organization. [step] The most immediate way to help giant pandas is by giving a gift to a protective organization like the world wildlife fund (wwf) or pandas international. Use the donation button on these websites to send your gift. <sep> (A) Your money goes to causes such as installing cameras and training rangers that protect panda habitats from poachers. [substeps] You usually can donate any amount of money you want, as well as choose to make it an automatically-recurring monthly donation. (B) [substeps] The u.s first states that turtle turtles should be charitable organizations. You can find several books on turtle turtles at http: // www.nih.gov/lbns-pride-turtle-turtle-turtle/donations. (C) [substeps] Make sure to consider charitable donations that may come in the form of local government donations or dollar donations. Digital sustainable initiatives can be extremely helpful, especially for ferns grown in low-water state parks. (D) [substeps] Consider sending plastic eggs to stuffed pandas international centers. This is a simple gift that many giant pandas international organizations would pay at least $500 , 000 to preserve during the process.
[EX A]:
A