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".
Problem:[header] How to stop getting so hot while sleeping [title] Use air conditioning. [step] The simplest way to keep your room cool while you sleep is to use your air conditioner if you have one. Central air or a portable window unit will both do the trick. <sep> (A) [substeps] If you can, always take a shower outside, even if the house is cool. Believe me, taking a shower every hour can help to prevent a body heat rash from occurring. (B) You'll get more interesting and sleepy knowing the temperature is actually cooler in your room. The cause of this is that it sucks hot sweat out of your body. (C) In a cooler climate, it will provide air without causing your lips to swell or becoming chapped. [substeps] This method also works well if your room is, as condensation is less likely to build up on your sheets. (D) The ideal sleeping temperature for most people is between 60 and 70 f (16 and 21 c). [substeps] If you have a programmable thermostat, don't forget to set it so that it automatically adjusts to a warmer temperature just before you wake up in the morning.
Solution:
D