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 bleed an oil furnace [title] Turn the furnace off before starting any work on the fuel pump. [title] Locate the bleed screw on the fuel pump near where the fuel line comes in. [step] The screw is usually a small nipple-like screw. <sep> (A) Look inside to make sure it doesn't have to be taken out using pliers. [title] Find the bleed screw under a piece of plastic wrap. (B) There may also be a screw on it near the port. These can be used for other screw fires, such as for a pressure washer, gas pump or other uses. (C) [title] Place a small bucket or pan under the bleed screw. [step] The bucket will catch any fuel that sputters out as you bleed an oil furnace. (D) If it has a thick lip, you'll need to use a pick to break it up. [title] Find a hot plate you can stretch over the bleed screw.
A:
C