This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
Which of the following organism's toxin works by same mechanism as Exotoxin A of Pseudomonas ? 
Select and explain. 
A. Tetanus, B. Peusis, C. Cholera, D. Diphtheria
D: Diphtheria
Answer: D: Diphtheria 
Explanation: In Pseudomonas pathogenesis , several toxic extracellular products are demonstrated in culture filtrates. Few of them are exotoxins A and S . Exotoxin A acts as NADase thus resembling diptheria toxin .