Gynaecology & Obstetrics In Klinefelter syndrome, all are true except A Negative feedback on FSH and LH are lost B Decreased Androstenedione levels C Hypoplastic male external genitalia D Most common cause of primary testicular failure 💡 Explanation In Klinefelter syndrome, all are true except ✓ Correct Answer: B. Decreased Androstenedione levels