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: Surgery
Which one of the following causes intestinal pseudo obstruction? 
Select and explain. 
A. Hypothyroidism, B. Tricyclic antidepressant, C. Parkinsonism, D. All the above
D: All the above
Answer: D: All the above 
Explanation: Intestinal pseudo obstruction is caused by the following 1) Disorders of the nervous system (Familial autonomic dysfunction, Hirschsprung disease, Chagas disease) 2) Diseases affecting muscles and nerves (Muscular dystrophy, SLE, Ehlers-Danlos syndrome, hypokalemia) 3) Disorders of the endocrine system (DM, Hypothyroidism, Hyperparathyroidism), and 4) Medication (Narcotics, Laxatives, Tricyclic antidepressants, Phenothiazines).Ogilive's syndrome is acute intestinal pseudo obstruction.