$\text{A.}$ $\alpha_1+\alpha_2, \alpha_2+\alpha_3, \alpha_3-\alpha_1$
$\text{B.}$ $\alpha_1+\alpha_2, \alpha_2+\alpha_3, \alpha_1+2 \alpha_2+\alpha_3$
$\text{C.}$ $\alpha_1+2 \alpha_2, 2 \alpha_2+3 \alpha_3, 3 \alpha_3+\alpha_1$
$\text{D.}$ $\alpha_1+\alpha_2+\alpha_3, 2 \alpha_1-3 \alpha_2+22 \alpha_3, 3 \alpha_1+5 \alpha_2-5 \alpha_3$
$\text{E.}$
$\text{F.}$