An ordered pair (α. β) for which the system of linear equations(1 + α)x + βy + z = 2αx + (1 + β)y + z = 3αx + β + 2z = 2 has a unique solution, is

• A. (2, 4)
• B. (-4, 2)
• C. (1, -3)
• D. (-3, 1)