An individual is found to consistently wear only a bathrobe and neglect the cleanliness of his apartment. When neighbors ask him to stop his frequent outbursts of operatic arias, he acts outraged and tells them he must sing daily and will not promise to be quieter. This behavior supports that he is .....
a) Experiencing social anxiety disorder
b) Demonstrating symptoms of schizophrenia
c) Exhibiting traits of obsessive-compulsive disorder
d) Showing signs of bipolar disorder