[I DONT GET THIS PLEASE HELP]
What series of transformations map △ABC onto △DEF to prove that △ABC≅△DEF ?

a reflection across y-axis then translation of 3 units right and 5 units up

a clockwise rotation of 180° about the origin then a translation 3 units right and 1 unit up

a reflection across y-axis then translation of 1 unit right and 1 unit down

a clockwise rotation of 90° about the origin
then a translation of 2 units right and 4 units up