Which statement is correct? Triangles B and B prime on the coordinate plane. Triangle B has vertices at: zero, 1; negative 4, 1; and negative 3, 5. Triangle B prime has vertices at: negative 1, zero; negative 5, negative 3; and negative 1, negative 4. A Triangles B and B′ are congruent because B′ is a translation 1 unit down of B. B Triangles B and B′ are congruent because B′ is a reflection across the x-axis of B. C Triangles B and B′ are congruent because B′ is a 90°counterclockwise rotation about the origin of B. D Triangles B and B′ are not congruent because there are no rigid transformations from B to B′.