Gynaecology & Obstetrics Which one of the following is true about visualization of gestational sac? A a) Detected at 4 - 5 weeks by transvaginal USG B b) Detected at 5 - 6 weeks by transabdominal USG C c) Detected at 3 - 4 weeks by transabdominal USG D Both 'a' & 'b' 💡 Explanation Which one of the following is true about visualization of gestational sac? ✓ Correct Answer: D. Both 'a' & 'b'