This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis in obstetrics, Subject name: Gynaecology & Obstetrics
False about chorionic villi biopsy: 
Select and explain. 
A. strongly associated with faciomandibular defects, B. Done in 10-12 weeks, C. Rh immunoglobulin prophylaxis is necessary, D. Done to diagnose genetic disorders
A: strongly associated with faciomandibular defects
Answer: A: strongly associated with faciomandibular defects 
Explanation: Done in 10-12 weeks in transcervically done to diagnose genetic disorders Rh immunisation:Anti-Dimmunoglobulin 50 microgm IM should be administered following the procedure to a Rh negative woman. complications: oromandibular limb deformities,vaginal bleeding and fetal D.C.DUTTA'S TEXTBOOK OF GYNECOLOGY,Pg no:107,7th edition