Creating a table such that there are arrows between columns

Here is a way with package listliketab and standard packages:

documentclass{article}
usepackage{array} 
usepackage{graphicx}
usepackage{amsmath}
usepackage{old-arrows}
usepackage{listliketab}

begin{document}

storestyleof{enumerate}
begin{listliketab}
newcounter{tabenum}
setcounter{tabenum}{0}
newcommand{tabitem}{stepcounter{tabenum}thetabenum. }
        begin{tabular}{Lc@{} >{$}c<{$}@{}c@{} >{$}c<{$}@{}c}
             & A. & & B. & & C. 
            tabitem & a&longrightarrow & b&longrightarrow & c 
             & d &smash[t]{rotatebox{45}{$xrightarrow{quadenspace}$}} 
            tabitem & e&longrightarrow & f &longrightarrow& g
        end{tabular}
end{listliketab}

end{document}