Multi-select problem: How does the next paragraph end?

How to find information on a business that no longer exists
Locate records through the library of congress.
The library of congress has compiled an aid to assist researchers in finding information on old businesses. The guide also includes selected internet resources relating to business history.

Pick from:
A). Locate any letters or abbreviations associated with a known business name. Request documents related to a particular name..
B). You can get most information via the library of congress website, although some library organizations accept access to older library materials as well. Refer to your author's work..
C). It can be found at https: // www.loc. Gov/rr/business/ask a library of congress librarian..
D). You can try looking through your library of congress's website. There are 75 federal libraries in the u.s..
C).