Which of the following is the same as 4x - 1 = 5x - 2 *

a x + x + x + x - 1 = x + x + x + x + x - 1 - 1
b x + x + x + x + 1 = x + x + x + x + x - 1 +1
c x + x + x + x = x + x + x + x + x - 1 - 1