Two augmented matrices for two linear systems in the variables x, y, and z are given below. The augmented matrices are in reduced row-echelon form. For each system, choose the best description of its solution. If applicable, give the solution. (a) [[1, 0, 0, |, -3], [0, 1, 0, |, -1], [0, 0, 1, |, 2]] The system has no solution. The system has a unique solution. (x, y, z) = (?, ?, ?) The system has infinitely many solutions. (x, y, z) = (x, ?, ?) (?, y, ?) (?, ?, z) (b) [[1, -5, 0, |, 3], [0, 0, 1, |, 3], [0, 0, 0, |, 0]] The system has no solution. The system has a unique solution. (x, y, z) = (?, ?, ?) The system has infinitely many solutions. (x, y, z) = (x, ?, ?) (?, y, ?) (?, ?, z)
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