Which of the following is incorrect regarding genome economy?

• A. It is a phenomenon of synthesizing more proteins from fewer genes
• B. This is a major strategy that eukaryotic organisms use to achieve a myriad of genotypic diversities only
• C. This is a major strategy that eukaryotic organisms use to achieve a myriad of phenotypic diversities
• D. There are numerous underlying genetic mechanisms to help account for genome economy