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
Acute pseudo-obstruction of the colon known as? 
Select and explain. 
A. Sjogren's syndrome, B. Gardner's syndrome, C. Ogilivie's syndrome, D. Peutz-jegher's syndrome
C: Ogilivie's syndrome
Answer: C: Ogilivie's syndrome 
Explanation: Ans. is 'c' i.e., Ogilivie's syndrome