How can you explain the similarity of the two insulin proteins?

A) There are variety of amino acid sequences for both the bacterial and human insulin protein.

B) Both the amino acid sequence and the transcription and translation of that code is identical in both organisms.

C) Scientists cut and paste to transcribe the correct nucleotide sequence in E. coli, as if it were being transcribed naturally in humans.

D) While the nucleotide sequences may vary in each organisms, the process of translation reorders the nucleotides into the correct order of the insulin protein.