This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Gynae), Subject name: Gynaecology & Obstetrics
pH of amniotic fluid is - 
Select and explain. 
A. 6.2, B. 6.8, C. 7.2, D. 8.2
C: 7.2
Answer: C: 7.2 
Explanation: Ans. is 'c' i.e., 7.2 * pH of amniotic fluid is 7.0-7.5.* The volume of amniotic fluid at term is 800 mL.* An osmolarity of 250 mOsmol/L of amniotic fluid is suggestive of fetal lung maturity.* Fetal urine is the major component of amniotic fluid.