Ted Believes That Space Aliens Have Replaced All of His

Ted believes that space aliens have replaced all of his internal organs with electronic monitoring devices, while Jeff believes that an FBI agent is following him. Regarding their most likely diagnoses, Ted would most likely be diagnosed with

A) schizophrenia, while Jeff would have a delusional disorder.
B) multiple personalities, while Jeff would have schizophrenia.
C) delusional disorder, while Jeff would have a conversion disorder.
D) a conversion disorder, while Jeff would have multiple personalities.