The value(s) of λ for which the system of equations x + y − 3 = 0, (1 + λ) x + (2 + λ) y − 8 = 0 and x - (1 + λ)y + (2 + λ)= 0 is consistent, is:
A. 5/3
B. −5/3
C. 1
D. −1