What is the solution to the system of equations?

A) x_(1) + 2x_(2) + x_(3) = 13x_(1) + 5x_(2) + x_(3) = 3
B) 2x_(1) + 6x_(2) + 7x_(3) = 1
C) x_(1) + 2x_(2) + x_(3) = 13x_(1) + 5x_(2) + x_(3) = 3, 2x_(1) + 6x_(2) + 7x_(3) = 1
D) None of the above