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
Secretory diarrhoea is found in- 
Select and explain. 
A. Thyrotoxicosis, B. Shigella infection, C. Lactase deficiency, D. Glucose intake
B: Shigella infection
Answer: B: Shigella infection 
Explanation: None