Identify the translation rule on a coordinate plane that verifies that triangle a(-5,1), b(-2,7), c(0,1) and triangle a'(-6,0), b'(-3,6), c'(-1,0) are congruent.
a) (x, y) → (x - 1, y - 1)
b) (x, y) → (x + 2 , y + 1)
c) (x, y) → (x - 2, y + 1)
d) the triangles are not congruent