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
According to Sigmund Freud, primary process thinking is - 
Select and explain. 
A. Illogical & Bizarre, B. Rational, C. Absent during sleep, D. Logical & unconscious
A: Illogical & Bizarre
Answer: A: Illogical & Bizarre 
Explanation: Primary process (related to Id):- Unorganized & non-logical thinking.
Secondary process (related to Ego):- Reality oriented, goal-directed, logical, rational, concrete and/or abstract conceptual thinking.