(04.02 HC) Which statement explains the relationship of sides BA and B'A' after rectangle BADC has been rotated 180° about the origin? coordinate plane with rectangle ABCD at A 3 comma 5, B 1 comma 3, C 5 comma negative 1, and D 7 comma 1 Side B'A' has a slope of −1 and is perpendicular to side BA. Side B'A' has a slope of 1 and is parallel to side BA. Side B'A' has a slope of 1 and is perpendicular to side BA. Side B'A' has a slope of −1 and is parallel to side BA.