This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Botulism is most commonly seen with 
Select and explain. 
A. Food with preservatives, B. Home canned food, C. Commercially canned food, D. Unpasteurized milk
B: Home canned food
Answer: B: Home canned food 
Explanation: The source of botulism is usually preserved food, meat, and meat products. Proteolytic varieties of clostridium botulinum can digest food, which then appears spoiled. The cans are often inflated and show bubbles on opening. Non-proteolytic varieties leave food unchanged. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 269