Koma-script documentation states:
L A TEX allows users to pass class options as a comma-separated list of keywords in the optional argument to \documentclass. In addition to being passed to the class, these options are also passed on to all packages that can understand them. Users can also pass a similar comma-separated list of keywords in the optional argument of \usepackage. KOMA - Script extends the option mechanism for the KOMA - Script classes and some packages with further options. Thus most KOMA - Script options can also take a value, so an option does not necessarily take the form option , but can also take the form option =value . Except for this difference, \documentclass and \usepackage in KOMA - Script function as described in [Tea05b] or any introduction to L A TEX, for example [OPHS11].