How Is a "Hangover" as a Result of Drinking Alcohol

How is a "hangover" as a result of drinking alcohol related to water balance in the body?

A) Alcohol is a diuretic, and the hangover feeling is a symptom of dehydration.
B) Alcohol behaves like ADH, and the hangover feeling is a symptom of dehydration.
C) Just as alcohol interferes with a body's overall balance system, it interferes with the water balance system, making you feel hungover.
D) Excessive alcohol use prevents sweating, and retaining extra water and potential overheating is part of what makes you feel hungover.
E) Alcohol makes the kidneys more porous such that they are unable to retain water, and feeling hungover is a symptom of dehydration.