△RST is mapped to △R′S′T′ using the rule (x, y)→(x, −y) followed by (x, y)→(3x, 3y) . Which statement correctly describes the relationship between △RST and △R′S′T′ ?△RST is congruent to △R′S′T′ because the rules represent a reflection followed by a rotation, which is a sequence of rigid motions.△RST is congruent to △R′S′T′ because the rules represent a reflection followed by a translation, which is a sequence of rigid motions.△RST is congruent to △R′S′T′ because the rules represent a rotation followed by a translation, which is a sequence of rigid motions.△RST is not congruent to △R′S′T′ because the rules do not represent a sequence of rigid motions.By the way, this question DOES NOT include a picture, so don't ask please.