Dorothy, a Connecticut Homemaker, Disappeared After Her Husband and Children

Dorothy, a Connecticut homemaker, disappeared after her husband and children were killed in a car accident. Four months later, she was found in Mobile, Alabama, working as a waitress. Dorothy claimed that her name was Abby, which was her daughter's name, and that she did not know anyone by the name of Dorothy. Even after being positively identified by family members, Dorothy continues to insist that her name is Abby. Dorothy is most likely suffering from

A) a dissociative fugue disorder.
B) a bipolar disorder.
C) schizophrenia.
D) a conversion disorder.