Would you put below the return address on a business envelope A Attention Jon Burke B personal C suite number D air mail?

On a business envelope, it is best to include A (Attention Jon Burke) to ensure the letter reaches the intended recipient. Including C (suite number) can also be helpful for precise delivery within a larger building. B (personal) and D (air mail) are generally not necessary for a standard business envelope. Therefore, options A and C would be the most appropriate to include.