Whose sequence proves triangle abc is congruent to triangle def? why?

preston says the sequence of transformations that maps triangle abc onto triangle def is: rotate it 180 degrees about the origin, and then translate it up 7 units.

chanel says the sequence of transformations that maps triangle abc onto triangle def is: reflect it across the x-axis, then reflect it across the y-axis, and then translate it up 6 units and left 1 unit.