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
All are true about atypical depression except 
Select and explain. 
A. Increased sleep and appetite is present, B. Weight gain can be seen, C. Fatigue & heaviness of the lower limbs is present, D. Mood reactivity to positive stimulus is absent
D: Mood reactivity to positive stimulus is absent
Answer: D: Mood reactivity to positive stimulus is absent 
Explanation: Mood reactivity of positive stimulus is present, that is patient feels better if some positive events occur in life.
Mood reactivity is absent in Melancholic depression.