Someone who brags about her physical health and vitality in front of a friend going through chemotherapy exhibits a symptom of which personality disorder?

A) histrionic
B) antisocial
C) narcissistic
D) schizotypal

Narcissistic personality disorder is characterized by a long-term pattern of exaggerated self-importance, the need for excessive attention and admiration, and a lack of empathy for others, which can manifest in insensitive behavior such as bragging about one's own health in front of someone who is seriously ill.