Aborted Embryos Are Not Generally Seen as a Viable Source

Aborted embryos are not generally seen as a viable source of embryonic stem cells because

A) Generally a woman does not know for sure she is pregnant until after the embryo has grown beyond the blastocyst stage
B) Aborted embryos are the primary source of embryonic stem cells
C) The process of aborting the embryo cause irreparable damage to the organism
D) There is too much political and religious pressure to take he chance of using aborted material