This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
A child is suffering from watery diarrhea. The isolated organism is showing darting motility. The most probable diagnosis is - 
Select and explain. 
A. Campylobacter, B. V. Cholerae, C. Enterotoxigenic E coli, D. Shigella
B: V. Cholerae
Answer: B: V. Cholerae 
Explanation: Ans. is 'b' i.e., V. Cholerae * Among the given options, Campylobacter and vibrio cholerae show darting motility.* V. Cholerae causes watery diarrhea, whereas Campylobacter usually causes dysentery.Types of MotilityMotilityOrganismsDarting* V. cholerae* Campylobacter* Gardnerella vaginalisStatelyClostridiaTumblingListeriaLashingBorreliaCorkscrew motilityT. pallidumGlidingMycoplasmaSwarmingProteus mirabilis & vulgaris, B. cereus, Cl tetani