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: Ophthalmology
Occurrence of diplopia, dysphagia, dysahria, blurring of vision and muscle weakness could be due to: 
Select and explain. 
A. Diphtheria, B. Botulism, C. Infantile beriberi, D. Myasthenia gravis
B: Botulism
Answer: B: Botulism 
Explanation: Ans.Botulism