This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
A lady while driving a car meets with an accident. She was admitted in an ICU for 6 months. After being discharged she often gets up in the night and feels terrified. She is afraid to sit in a car again. The diagnosis is : 
Select and explain. 
A. Anxiety disorder, B. Phobia, C. Conversion disorder, D. Post traumatic stress disorder
D: Post traumatic stress disorder
Answer: D: Post traumatic stress disorder 
Explanation: Information in this question is :

A traumatic event involving the threat of life or injury (car accident).
Nightmares (gets up in the night & feels terrified).
Avoidance (afraid to sit in a car again → avoiding to sit in a car).

Diagnosis is PTSD.