Which series of transformations maps △ABC to △A′B′C′? select all that apply

a. Translate △ABC left 1 unit, then reflect the resulting triangle across the x-axis.
b. Reflect △ABC across the x-axis, then translate the resulting triangle left 1 unit.
c. Translate △ABC down 2 units, then reflect the resulting triangle across the x-axis.
d. Reflect △ABC across the x-axis, then translate the resulting triangle-down 1 unit.