Which Activity Would Be Considered Cloning of Recombinant DNA

Multiple Choice

Which activity would be considered cloning of recombinant DNA?

A) Using PCR to produce millions of copies of a specific DNA sequence that came from a human hair for use in forensics
B) Using PCR to produce millions of copies of a specific DNA sequence from a 20,000-year-old wooly mammoth fossil
C) Producing many copies of a gene from a tomato that codes for an enzyme in a yeast cell
D) Using green fluorescent protein as a reporter gene
E) Using a gene that codes for antibiotic resistance as a reporter gene