Given the task definition and input, reply with output. 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".

[header] How to get permanent ink off windows [title] Ventilate the area and put on plastic gloves. [step] Wd-40 is a strong chemical, so crack a nearby window or work in a well-ventilated area. Put on a pair of plastic gloves to protect your hands. <sep> (A) Extinguish any flames nearby, such as candles. Wd-40 is highly flammable. (B) [title] Pour the wd-40 into the window and check the color with a microscope. [step] The marker may go dark or blotchy. (C) If you plan to paint your project, stand by the window. Before you begin painting, clean up any splatters or smudges you might have missed with a rag. (D) Then, wear a face mask as you scratch at the ink with a rubber band. [substeps] If you decide to wear a mask to remove the ink, finish scraping off the surface of the glass.
A