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: Medicine
Earliest pathological change is X-ray in Ulcerative Colitis - 
Select and explain. 
A. Loss of haustration, B. Aphthous ulcerattions, C. Mucosal granularity, D. Skip tensions
C: Mucosal granularity
Answer: C: Mucosal granularity 
Explanation: None