This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
A child is presenting with vomiting and abdominal pain after 5 hours of eating some food. The most likely causative orgonism: 
Select and explain. 
A. Bacillus cereus, B. Cl. perfringens, C. Cl. botalinum, D. V. cholerae
A: Bacillus cereus
Answer: A: Bacillus cereus 
Explanation: M/C cause of food poisoning. Chinese fries rice is major source of the organism. REF : ananthanarayana 10th ed