Mariah Is a 23-Year-Old Who Has Been Diagnosed with Major

Mariah is a 23-year-old who has been diagnosed with major depression. Last year she began experiencing delusions, as well as disorganized thinking and behaviors. These symptoms remitted with medication but she then began to display flat affect and social withdrawal. Two months ago she once again began to experience delusions and an increase in disorganized thinking. Which of the following disorders is Mariah experiencing?

A) Schizophrenia
B) Schizoaffective disorder
C) Major depression with psychotic features
D) Bipolar I disorder