Teacher: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".
Teacher: Now, understand the problem? Solve this instance: [header] How to level a camper [title] Pick a flat place to park. [step] Try to find a parking spot that is as flat as possible. Leveling is meant to compensate for minor ground unevenness, so parking on a slope will still be uncomfortable and unsafe. <sep> (A) [substeps] If the ground slopes to the camper's side, reposition the camper so the ground slopes towards the front or back end. [title] Clear out the area before leveling the camper. (B) Parking on a slope will also make it more difficult for you to get used to the trees and terrain changes that will make leveling difficult. [substeps] Steep slopes generally have a greater risk of falling, which makes them ideal for leveling flat. (C) [title] Call a friend if you are unable to access the area where you plan to start leveling. [step] This will ensure your camper will be level within the area and won't cause trouble. (D) Parked parking is safer and smoother, in addition to making sure your camper is safe for long-term use. [substeps] Some campers may have great reason to have difficulty leveling their camper.
Student:
A