A. In addition to WinRAR you will find, in the distributive, the file rar.exe.
It is also a 32-bit RAR version for Windows, but it supports only the command line, text mode interface.
It is useful to call console RAR from BAT and CMD files, to use it in the DOS prompt and so on. It supports a larger number of command line switches and commands when compared with WinRAR, but it does't support ZIP and other formats.