Use the Gauss-Jordan method to solve the system of equations. y=x-1 y=5+z z=0-x Select the correct choice below and fill in any answer boxes within your choice. OA. There is one solution. The solution is (1), in the order x, y, z. (Type an exact answer in simplified form.) B. There are infinitely many solutions. The solution is (z), where z is any real number. (Type an exact answer in simplified form.) OC. There is no solution.