You will be given a definition of a task first, then some input of the task.
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 remove black hair dye [title] Use color removing kits. [step] Drugstore kits are designed for the removal of any unwanted hair color. There are a variety of these kits on the market, each of which contain different chemicals and instructions. <sep> (A) Most kits include a shampoo and cold rinse option. [substeps] Some kits may require a homemade shampoo and run-through. (B) Head store kits are available at pharmacies, but also online, and cost only a few dollars. [substeps] It is also possible to create a wig using the kit you need. (C) [substeps] Look for extra strength as black hair dye is the most difficult dye to remove. Consider your length and how heavy the color dye is that you used. (D) Some kits contain spritz binding agents, which might release unwanted hair from the dye. Pre-up kits are usually good options based on how you want to remove unwanted hair.
Output:
C