Fred Believes That His Children Are Attempting to Have Him

Fred believes that his children are attempting to have him put in an "old-age" home, and he is quite upset. Every time his son and daughter come to visit, Fred tells them that he refuses to go to a home and he knows they are trying to trick him into agreeing. Fred's children are concerned, however, because they have not mentioned a residential home in years. Fred appears to be suffering from

A) brief psychotic disorder.
B) paranoid schizophrenia.
C) late-onset schizophrenia.
D) delusional disorder.
E) early-onset schizophrenia.