Benzodiazepines are used to reduce alcohol dependence.Why is the dosage of the specific benzodiazepine decreased each day while using it to treat a substance use disorder?

A) To increase the tolerance toward alcohol
B) Because people tend to relapse into alcohol use if the same dosage is provided
C) Because benzodiazepines are extremely toxic
D) To ensure that the person does not become dependent on the benzodiazepine