11.

Solve the following system of equations. -X + 2y + z = 2 -X+ y + 2z = 5 y - 2=4 Which of the following is true about the solution of this system? O A. The system has only one solution and the z-coordinate of the solution is z = 1. O B. The system has infinitely many solutions and the x-coordinate of the solution is x = 3z where z is arbitrary. O c. The system has infinitely many solutions and the x-coordinate of the solution is x = - 3z where z is arbitrary. O D. The system has only one solution and the z-coordinate of the solution is z = - 1 O E. The system has no solution