A 36 year old man walks into a bank and demands money claiming he owns the bank. On being denied, he goes to the police station to report this. What kind of delusions is he suffering from?

The key is E. Delusion of grandeur. [A delusion of grandeur is the false belief in one's own

superiority, greatness, or intelligence. People experiencing delusions of grandeur do not just have high

self-esteem; instead, they believe in their own greatness and importance even in the face of

overwhelming evidence to the contrary].