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
The length of the feeding tube to be inseed for transpyloric feeding is measured from the tip of ? 
Select and explain. 
A. Nose to the umbilicus, B. Ear lobe to the umbilicus., C. Nose to the knee joint., D. Ear lobe to the knee joint.
B: Ear lobe to the umbilicus.
Answer: B: Ear lobe to the umbilicus. 
Explanation: Ans is 'b' ie., ear lobe to the umbilicus The feeding tube length can be measured by following the normal route for tube i.e. Nasal ala --> to ear lobe --> to epigastium Since the distance between the nasal ala and ear lobe is almost equal to the distance between the epigastrium and umbilicus, the length can be measured from ear lobe to umbilicus.