This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
Fetal hea stas contracting at- 
Select and explain. 
A. 10-12 days, B. 10-12 weeks, C. 3-5 weeks D. 3- 5 month, D. 3- 5 month
C: 3-5 weeks D. 3- 5 month
Answer: C: 3-5 weeks D. 3- 5 month 
Explanation: The fetal hea stas contracting at approximately 23 days of gestation REF : DUTTA BOOK OF OBESTETRICS