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: Anatomy
Length of small intestine is: 
Select and explain. 
A. 4 metres, B. 6 metres, C. 9 metres, D. 10 metres
B: 6 metres
Answer: B: 6 metres 
Explanation: Ans. B i.e. 6 metresSmall intestine dimensionsThe average length of the small intestine in an adult human male is 6.9 m (22 feet 6 inches), and in the adult female 71 m (23 feet 4 inches).It can vary greatly, from as sho as 4.6 m (15 feet) to as long as 9.8 m (32 feet).It is approximately 2.5-3 cm in diameter.