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: Microbiology
Bacillus Bacillus anthracis toxin rediates its action through all except: 
Select and explain. 
A. cAMP, B. Stimulating macrophages, C. TNFa, D. cGMP
D: cGMP
Answer: D: cGMP 
Explanation: Ans. is. 'd' i.e. cGMP