usepackage{titlesec}
    titleclass{scenario}{straight}[subsection]
    newcounter{scenario}[subsection]
    titleformat{scenario}
      {scshape}{}{0em}{(thescenario)~}
    titlespacing*{scenario}{0pt}{3.25ex plus 1ex minus .2ex}{1.5ex plus .2ex}
    renewcommand*{thescenario}{Alph{scenario}}
    newcommand{scenarioautorefname}{scenario}