\begin{array}{l}
\displaystyle A=3*\Big(1-\frac{1}{e}\Big)\approx 1.896361676485673,\\
\\
\displaystyle B=-3\Big(1-\frac{2}{e}\Big)\approx -0.79272335297135,\\
\\
\displaystyle C=2-\frac{5}{e}\approx 0.16060279414279.
\end{array}