Nowadays,how Are Longer Synthetic Molecules of DNA Synthesized for Use

Multiple Choice

Nowadays,how are longer synthetic molecules of DNA synthesized for use in experimental procedures?

A) by insertion into bacterial cells
B) by insertion into bacteriophage
C) chemical synthesis as complementary single-stranded DNA molecules that can be hybridized together in DNA synthesizers
D) as single-stranded segments which are joined together
E) as a long continuous strand