This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psychoanalysis, Subject name: Psychiatry
A pilot whose plane is about to crash, spends five minutes explaining the technical details of the engine malfunction to his copilot. The defense mechanism that the pilot is using is. 
Select and explain. 
A. Repression, B. Sublimation, C. Dissociation, D. Intellectualization
D: Intellectualization
Answer: D: Intellectualization 
Explanation: Excessive use of intellectual processes to deal with unpleasant emotions is called as intellectualisation.