A geneticist make radioactively labeled probes using human DNA. If one of these probe hybridizes with a small piece of DNA isolated from plant, the scientist could concede any of the following except--
A. The human diet has included the plant for many generations.
B. The plant uses the same genetic code as humans.
C. The plant might have a gene that is almost identical to a human gene.
D. The wrong method was used to detect the radioactively labeled DNA.