The nurse on the mental health unit receives report about a client diagnosed with schizophrenia who has a delusion of reference. Which client statement supports this symptom?

"I need for you to get rid of these bugs that are crawling under my skin."

"Those Martians are trying to poison me with the tap water."

"Hear that? She told me to kill my father."

"That song is a message sent to me in secret code."