Suppose △ABC has coordinates A(2, 3), B(5, 1), C(4, 4), and △ABC is mapped to △A′B′C′ by a reflection across the line y = 5 followed by a translation 1 unit down. select all the statements that are true about the coordinates of △A′B′C′.
A. All the vertices of △A′B′C′ are in Quadrant I.
B. All the vertices of △A′B′C′ are in Quadrant IV.
C. The x-coordinates of A′, B′, and C′ are all positive.
D. The x-coordinates of A′, B′, and C′ are all nonnegative.
E. The y-coordinates of A′, B′, and C′ are all positive.