已知 $\boldsymbol{\alpha}_1=(1,1,-1,-1), \boldsymbol{\alpha}_2=(1,2,0,3)$, 求 $\boldsymbol{\alpha}_3, \boldsymbol{\alpha}_4$, 使得 $\boldsymbol{\alpha}_1, \boldsymbol{\alpha}_2, \boldsymbol{\alpha}_3, \boldsymbol{\alpha}_4$ 线性无关.
$\text{A.}$
$\text{B.}$
$\text{C.}$
$\text{D.}$