Why Do Some People Not Drink Beverages with Caffeine Right

Why do some people not drink beverages with caffeine right before bedtime?

A) It increases the flow of urine and causes you to go to the bathroom during the night.
B) It decreases the flow of urine and can cause kidney stones.
C) It may affect the ability to sleep, but caffeine has very little effect on the urinary system.
D) It can cause a headache if consumed late at night.
E) It can lead to diarrhea.