According to Holmes and Holmes (1998),which type of serial murderer is most likely to be diagnosed as delusional or psychotic?

Question

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The visionary serial murderer is most likely to be diagnosed as delusional or psychotic as they often suffer from severe mental illnesses such as schizophrenia, and believe they are fulfilling a mission or receiving messages from a higher power to commit their murders.

According to Holmes and Holmes (1998),which Type of Serial Murderer