In robots.txt file I have following sections
User-Agent: Bot1 Disallow: /A User-Agent: Bot2 Disallow: /B User-Agent: * Disallow: /C
Will
If the bots obey the robots.txt file, yes the statement will be visible, so they will not be able to crawl /c.
The wild card (*) after the user agent means all user agents.
However bear in mind not all bots obey robots.txt