Statement -I : The solution of the equations x−y+3z=5,4x+2y−z=0,−x+3y+z=5 is x=0,y=1,z=2 Statement - II: The solution of the equations 2x−y+3z=9,x+y+z=6,x−y+z=2 is x=0,y=2,z=1 Then which of the above statement(s) is true?