Your Body's Immune System Response Can Be Reduced ____

 Your body's immune system response can be reduced ____. 

A) with just a few nights of sleep deprivation, but recovery will take more than a month of normal sleep
B) only after a month or more of sleep deprivation, but recovery will only occur after only a few nights of normal sleep
C) with just a few nights of sleep deprivation, and recovery can occur with just a few nights of normal sleep
D) only after a month or more of sleep deprivation, and recovery will occur only after a month or more of normal sleep