Couple staying together for 4 years, having unprotected intercourse, still not conceiving . Test in wife is normal . Semen analysis howsavolume of 0.8 ml/sperm count is 0/ no fructose / what is done next ?

• A. Testicular FNAC
• B. Ultrasound for obstruction
• C. Local palpation of vas
• D. Karyotyping