Consider the following system of linear equations x + y + 5z = 3, x + 2y + mz = 5 and x + 2y + 4z = k. The system is consistent if

(A). m ≠ 4

(B). k ≠ 5, m = 4

(C). m = 4, k = 1

(D). m=  4, k = 5

Choose the correct answer from the options given below: