A 45-year-old man presents for his first appointment. He introduces himself as "John the spaceman" and is wearing a neon orange tie, a puffy silver coat, and multicolored pants. His mother is deceased, and the only people he feels comfortable speaking with are his father and brother. The patient does not trust other people because he never knows "what they may be plotting". He works as a mail-sorter in the back of the local post office. Which of the following personality disorders is the most likely diagnosis?
A. Antisocial.
B. Paranoid.
C. Schizotypal.
D. Histrionic.