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 keep ice from melting [title] Use a light colored container. [step] Look for a light colored cooler or ice bucket that is made of reflective material. Light colors absorb less heat, and will help to keep your ice from melting. <sep> (A) Dark colors will make it easier to move the cooler when storing foods and items. [substeps] It's also a good idea to use a dark glass container, no bigger than half an inch. (B) [substeps] A cooler or ice bucket made from nylon or styrofoam will keep the ice cool for at least the day. A plastic container will keep ice cool overnight, as long as it is not placed in direct sunlight. (C) Try not to overheat your cooler or ice bucket. This can cause frozen ice crystals to form, making your ice cooler [title] Wrap your ice cooler. (D) You can use transparent glass, ,, , or aluminum. However, ice can still freeze, so choose an opaque one.
Output:
B