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: Social & Preventive Medicine
All are features of epidemic dropsy, except – 
Select and explain. 
A. Glaucoma, B. Diarrhoea, C. Convulsion, D. Heart failure
C: Convulsion
Answer: C: Convulsion 
Explanation: None