This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Alvarado score is used in the diagnosis of 
Select and explain. 
A. Diveiculitis, B. Liver failure, C. Chronic hepatitis, D. Acute appendicitis
D: Acute appendicitis
Answer: D: Acute appendicitis 
Explanation: The most widely used is the Alvarado score A score of 7 or more is strongly predictive of acute appendicitis. The Alvarado (MANTRELS) score Symptoms Score Migratory RIF pain 1 Anorexia 1 Nausea and vomiting 1 Signs Tenderness (RIF) 2 Rebound tenderness 1 Elevated temperature 1 Laboratory Leucocytosis 2 Shift to left 1 Total 10 Ref: Bailey & Love&;s Sho Practice of Surgery,E25,Page-1211