The number of values of K for which the system of equations (K – 1)x + (3K + 1)y + 2Kz = 0, (K – 1)x + (4K –2)y + (K + 3)z = 0 and 2x + (3K + 1)y + 3(K – 1)z = 0 has a common non zero solution is
A. 3
B. 0
C. 1
D. 2