Task: Instance Description Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes the instance 'erotomania'?

A. A term which has had multiple usages since Classical times. Originally it was a name for a disease caused by unrequited love; then it became a disease of excessive sexual desire or activity (similar to hypersexuality, known then either as nymphomania or satyriasis), next it became a mental disorder generally, and finally it came to be known as a paranoid delusion in which someone believes that they are loved by someone else (it is preferred to use De Clerambault syndrome for this final definition to avoid confusion).
B. A formerly used diagnosis in DSM-III (1980). It was replaced by "identity problem" in DSM-IV (1994). In DSM-5 (2013), it was removed.
C. An internet slang term describing someone who shows excessive sympathy and attention toward another person, typically someone who does not reciprocate the same feelings, in order to win their affection. This is usually done in pursuit of a sexual relationship.
D. A euphemism used by obituary writers in the United Kingdom in order to note that the deceased was gay.

Answer: A term which has had multiple usages since Classical times. Originally it was a name for a disease caused by unrequited love; then it became a disease of excessive sexual desire or activity (similar to hypersexuality, known then either as nymphomania or satyriasis), next it became a mental disorder generally, and finally it came to be known as a paranoid delusion in which someone believes that they are loved by someone else (it is preferred to use De Clerambault syndrome for this final definition to avoid confusion).