Which of the following statements contradicts the dopamine theory of schizophrenia?

Question

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Both statements contradict the dopamine theory of schizophrenia. The theory suggests that excessive dopamine activity in specific pathways of the brain is responsible for the development of schizophrenia symptoms. However, many people with schizophrenia are not helped by dopamine antagonists, which suggests that dopamine may not be the only factor involved in the disorder. Additionally, the fact that clozapine, a weak dopamine antagonist, can improve symptoms in those who were not helped by stronger dopamine antagonists also undermines the theory that dopamine is solely responsible for schizophrenia symptoms.

Which of the Following Statements Contradicts the Dopamine Theory of Schizophrenia