Which of the Following Is True of Classical Conditioning

Which of the following is true of classical conditioning?

A) This process involves the learning of a connection between an originally neutral stimulus and a naturally evoking stimulus that produces an automatic reflexive reaction.
B) It is a somatic treatment in which a neurosurgeon implants a microelectrode that delivers a constant low electrical stimulation to a small region of the brain.
C) It is a somatic treatment that is intended to reduce the individual's symptoms by altering the levels of neurotransmitters that are involved.
D) It is the process through which the therapist interprets the dreams of the client through hypnosis and tries to find the reason behind addictions.