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: Surgery
True about colonic organisms is - 
Select and explain. 
A. Distal ileum 103- 105 org, B. colon 1010-1011, C. First org in new born is coliforms and streptococcus, D. Chyme in jejunum contains many bacteria
B: colon 1010-1011
Answer: B: colon 1010-1011 
Explanation: • At birth, the intestine is sterile, but organisms are soon introduced with food.
• In the breastfed children, the organisms present in the intestine: Lactic acid streptococci and Lactobacilli.
• In normal adults, the stomach acidity keeps the number of microorganism at minimum, unless obstruction at the pylorus favors the proliferation of gram positive cocci and bacilli.
• As the pH of intestinal contents becomes alkaline, the resident flora gradually increases.
• In diarrhea, bacterial count decreases, whereas count increases in intestinal obstruction.