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
[{'content': 'Enterotoxigenic E. Coli causes: \nSelect and explain. \nA. Haemolytic uremic syndrome, B. Ischemic jejunitis, C. Toxic shock syndrome, D. Travellers diarrhea', 'role': 'user'}, {'content': "Answer: D \nExplanation: Option 1 HUS By EHEC or Shigella dysenteriae type 1. Dissemination of toxin- Verocytotoxin or Shiga toxin to glomerular capillaries. Option 2 Ischemic jejunitis: Not caused by any pathogen. Due to local or systemic pathlogy Option 3 Toxic shock syndrome By Staphylococcus aureus or Streptococcus pyogenes. Due to toxins that act as superantigens. Option 4 ETEC Most common cause of traveler's diarrhea in the world. Most common cause of bacterial diarrheas in all ages.", 'role': 'assistant'}]