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: Pathology
What is true about ulcerative colitis ? 
Select and explain. 
A. Involves rectum and then whole colon backwards, B. Involves only colon, C. Skip lesions seen, D. Ileum not involved
A: Involves rectum and then whole colon backwards
Answer: A: Involves rectum and then whole colon backwards 
Explanation: Ans. is- A Ulcerative colitis (UC) is a long-term condition that results in inflammation and ulcers of the colon and rectum.