Solve the system of equations using augmented matrix methods. X1 - 2X2 = - 8 2x1 - X2 = -1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The unique solution to the system is x, = and X2 = (Simplify your answers.) O B. There are infinitely many solutions. The solution is x, = and X, = t, for any real number t. (Type an expression using t as the variable.) O C. There is no solution