This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood disorders, Subject name: Psychiatry
Classical triad of symptoms of depression includes all except 
Select and explain. 
A. Depressed mood, B. Slowed thinking, C. Distractibility, D. Psychomotor retardation
C: Distractibility
Answer: C: Distractibility 
Explanation: A typical depressive episode is characterised by the following features: Depressed Mood Depressive Ideation/Cognition: ideas of wohlessness, self-reproach and guilt-feelings. The other features are difficulty in thinking, difficulty in concentration, indecisiveness, slowed thinking, subjective poor memory, lack of initiative and energy. Psychomotor Activity: In younger patients (< 40 years old), retardation is more common and is characterised by slowed thinking and activity, decreased energy and monotonous voice. Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no.71