This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
The minor surfactant in lung is 
Select and explain. 
A. Stearic acid, B. Palmatic acid, C. Phosphotidyl choline, D. Sphyngomyelin
D: Sphyngomyelin
Answer: D: Sphyngomyelin 
Explanation: Phosphotidyl choline is major surfactant Sphyngomyelin is minor surfactant