Which Vector Would Be Used to Express a Human Protein $\lambda$

Multiple Choice

Which vector would be used to express a human protein in E. coli?

A) An expression plasmid containing cDNA made from mRNA for the human protein
B) An expression plasmid containing an EcoRI-cut piece of the gene for the human protein
C) The human gene for the protein inserted into E. coli by a bacteriophage $\lambda$ expression vector
D) A yeast artificial chromosome containing the human gene for the protein