Where to cc in a business letter would you succinctly state why you are writing the letter?

In a business letter, you typically place the "cc" (carbon copy) notation at the bottom of the letter, after your signature and any enclosures. This section indicates to whom else you are sending a copy of the letter. It's not necessary to state why you are writing in the "cc" line; instead, the purpose of the letter should be clearly articulated in the body of the letter itself.