Qualities of a Good Vector

Q. Some foreign DNA fragment is attached to Cla I site of pBR322. This recombinant vector is used to transition Escherichia coli host cells. The cells subjected to transformation are plated on two different media-one containing ampicillin and the other containing tetracycline. The transformed cells containing the recombinant vector

1. will grow on both tetracycline containing and ampicillin containing media
2. will not grow on tetracycline, but not on ampicillin-containing media
3. will grow on ampicillin but not on tetrecycline-containing media
4. will not grow on either tetracycline containing or ampicillin containing media