Our company has five business units that we classify as operating segments. Financial data for these units follows $($in $$1,000$s$)$: $(9$ points$)$

A B C D E

Sales $$32,500$ $$15,800$ $$16,800$ $$1,200$ $$2,100$

Profit $($$$4,200)$ $$7,500$ $$2,500($$$4,800)$ $$800$

Assets $$55,000$ $$9,500$ $$32,500$ $$5,200$ $$7,000$

Which of these operating segments should be disclosed in the footnotes to our financial statements?