Question 7 (L.O.1, L.O.2). Let \( m=1 \). In the vector space \( \mathbb{R}_{4} \), let \( V \) be a subspace, which is the set of all solutions of the homogeneous linear system \( A X=0 \). Find one basis of \( V \).
A. \( \{(1,2,-2,0),(0,-3,3,3),(0,0,0,4)\} \).
B. V does not have any basis.
C. None of the others.
D. \( \{(-3,3,3,0)\} \).
E. \( \{(0,-1,1,-2)\} \).