In insertional inactivation:
a.if foreign DNA is inserted, b-galactosidase is inactivated, and the colonies turn blue
b.if foreign DNA is inserted, b-galactosidase is inactivated, and the colonies remain white
c.if foreign DNA is inserted, b-galactosidase is activated, and the colonies remain white
d.if foreign DNA is inserted, b-galactosidase is activated, and the colonies turn blue