Amniocentesis May Be Preferred Over Chorionic Villus Sampling (CVS)for Karyotyping

Amniocentesis may be preferred over chorionic villus sampling (CVS) for karyotyping because

A) CVS is a less invasive procedure and has a faster recovery time.
B) amniocentesis can be performed more quickly than CVS.
C) CVS carries a lower risk of miscarriage than amniocentesis.
D) a larger amount of tissue may be taken, allowing the results to be obtained more quickly.
E) amniocentesis may be performed at an earlier stage of pregnancy and so the risk of miscarriage is higher.