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
Pseudomembranous colitis, all are true except 
Select and explain. 
A. Toxin A is responsible for clinical manifestation, B. Toxin B is responsible for clinical manifestation, C. Blood in stools is a common feature, D. Summit lesions are early histopathological finding
C: Blood in stools is a common feature
Answer: C: Blood in stools is a common feature 
Explanation: Blood in stools is not commonly seen in pseudomembranous colitis. Two high molecular weight exotoxins A and B are involved in the pathogenesis of the condition. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 270