Detailed 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".
Q: [header] How to stop sweating in your sleep [title] Check the temperature of your bedroom. [step] One of the most common causes of sweating in your sleep is a room that is too hot or bedding that is too warm. Try lowering the temperature in your room, using a fan, or using less bedding. <sep> (A) If your night sweating is more than occasional and is not relieved by adjusting the temperature in your room or the bedding you use, you might have night sweats. If this is the case, you will need to look into medical treatment. (B) Subtract the temperature to the nearest " cool temperature. " [substeps] Be sure to quickly turn off your thermostat in your bedroom. (C) [substeps] A room thermometer can help you keep track of how hot your room is. When you check it, change your bedding as well. (D) [substeps] Putting down your window shades or curtains to block out light is a smart, effective way to do this. You can also consider using something light-blocking, such as a tube lamp, to block sunlight in your room.
A:
A