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: Pediatrics
Fetal lung maturity assessed by all except – 
Select and explain. 
A. Measurement of α-feto protein, B. Lecithin: sphingomyelin ratio, C. Measurements of amnotic fluid creatinine, D. Phosphatidyl choline concentration in amniotic fluid
A: Measurement of α-feto protein
Answer: A: Measurement of α-feto protein 
Explanation: None