After Learning of Her Father's Death, Sophia Felt Dazed and Confused

After learning of her father's death, Sophia felt dazed and confused but still retained her sense of self. When speaking of her response to the news, she said she felt like she was in a movie watching the events happening to her. Despite this strange feeling, she understood what was happening and did the things that she needed to do. What can be said of Sophia's response to her father's death?

A) Her response is not typical and suggests that she is suffering from acute stress disorder.
B) She experienced an instance of derealization.
C) She had a psychotic break.
D) She experience an instance of depersonalization.