This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pediatrics
The development of septal defects in the fetal hea occurs at 
Select and explain. 
A. 3-5 weeks, B. 6-8 weeks, C. 9-12 weeks, D. 13-15 weeks
B: 6-8 weeks
Answer: B: 6-8 weeks 
Explanation: Fetal hea septal defect develop by 6-8 weeks. Ref : Ghai essential of pediatrics, eighth edition, p.no: 402