X-Gal is included in the growth medium on which cells transformed with bacterial plasmids are grown. The reason X-Gal is included is to A) minimize the chances that a vector will re- circularize without incorporating a fragment of foreign DNA B) eliminate bacteria that do not contain plasmid DNA C) eliminate bacteria that do not contain recombinant plasmid D) identify bacteria that contain a plasmid having a DNA insert that disrupts lacZ gene.