[ 1 0 0 2 ]
[ 0 1 0 1 ]
[ 0 0 0 0 ]
A. Unique solution: x = 0, y = 0, z = 0
B. Unique solution: x = 2, y = 1
C. Infinitely many solutions
D. No solutions
E. Unique solution: x = 1, y = 2
F. None of the above