Peter arrived at the party exactly on time. He made a point of speaking to every guest for five minutes. He talked mostly about technology and finance, and avoided any inquiries about his feelings or personal life. He left precisely at 10 p.m. because he had work to do at home. Which personality disorder does he display?

antisocial

paranoid

schizoid

schizotypal

borderline

histrionic

narcissistic

avoidant

dependent

obsessive- compulsive