Gynaecology & Obstetrics To say twin discordance the differences in the two twins should be: A 15% with the larger twin as index B 15% with the smaller twin as index C 25% with the larger twin as index D 25% with the smaller twin as index 💡 Explanation To say twin discordance the differences in the two twins should be: ✓ Correct Answer: C. 25% with the larger twin as index