<prompt> True about chorionic villi biopsy:a Strongly associated with fascio mandibular defectsb Done in 10-12 weeksc Rh immunoglobulin prophylaxis is not necessaryd Done to diagnose genetic disordersacdbcdabdab  <response>: Remember after CVS:Anti-D immunoglobulin 50 m gm IM should be administered to a Rh-negtive woman. 