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
Botulinum toxin acts by which mechanism 
Select and explain. 
A. Transmitter uptake inhibition, B. Transmitter release inhibition, C. Transmitter synthesis inhibition, D. Transmitter breakdown inhibition
B: Transmitter release inhibition
Answer: B: Transmitter release inhibition 
Explanation: Clostridium botulinum produces type A toxin. It acts by blocking the release of acetylcholine at the synapses and neuromuscular junction. Thus blocks neuromuscular transmission. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 269