What sales section title do select?

We have sold foreign stocks, both short and long term. I need to select a sales section title. 

It's not Box A - basis reported to IRS (covered) -- it's a foreign brokerage which is not required to report to IRS

Both B and C are true.

Box B - basis not reported to IRS (noncovered)  -- should we have reported it to IRS somehow when we bought it?

Box C - did not receive 1099-B form -- foreign brokerage does not issue 1099s

Should I select B or C?