Instructions: 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".
Input: [header] How to activate glow in the dark nail polish [title] Buy glow-in-the dark nail polish. [step] Some nail polish is advertised as already being capable of glowing in the dark. You can buy the nail polish in many drug, accessory, and department stores and online. <sep> (A) [substeps] Apply a base coat of regular nail polish. You should choose a white or neutral base color. (B) See if you are still interested in developing glow on your nails. [substeps] If you bought dark nail polish in the store, the polish will give you glow-in-the-dark nails. (C) [substeps] A different brand of glow-in-the-dark nail polish can even be used instead of an existing polish. Remember, the following rules are very similar to those used to replace the old polish: do not use neon lime or neon gold polish. (D) [substeps] Glow-in-the-dark nail polish bottles have been approved by the fda in 2014 for the maximum ability to glow dark on your nails. [title] Brush or squeeze glow-in-the-dark dark nail polish onto a cotton ball.
Output:
A