Q: 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 clean water bottles [title] Clean the bottle with soap and water. [step] Mild soap and warm water can be a great cleaning option for your water bottle. Use a cloth or a sponge to clean the bottle with a few dabs of soap under running warm water. <sep> (A) Then, wipe the bottle clean until all of the residue is gone. [substeps] Though you can disinfect the bottle with dish soap and water after you remove the protective cap, there is no point doing this for clean bottles that you don't use often. (B) Be sure to gently scrub the top, sides, and bottom of the bottle, as these areas can harbor bacteria. [title] Use oven mitts to clean your hands and the bottle. (C) Make sure you clean the cover or top of the water bottle as well as the mouth of the water bottle and the inside of the bottle. Wipe the bottle inside and out in a circular motion a few times to really clean it well. (D) [substeps] Water like this cannot only remove debris, but also kill germs and bacteria that cause your bottle to smell stale and dusty. Dry the bottle thoroughly with a clean cloth.
A:
C