In the Context of Recombinant DNA Technology, Plasmids Are Used

In the context of recombinant DNA technology, plasmids are used as vectors. This means
That plasmids

A) allow for transfer of foreign DNA molecules into a host cell.
B) allow for infection and lysis of host cells.
C) serve as host cells for amplification of foreign DNA molecules.
D) function as artificial chromosomes in host cells.