∆DEF has vertices D(1, 4), E(3, 5), and F(2, 1). If you reflect ∆DEF across the x-axis, what will be the coordinates of the vertices of the image ∆D′E′F′?

A.) D′(–1, –4), E′(–3, –5), and F′(–2, –1)

B.) D′(–1, 4), E′(–3, 5), and F′(–2, 1)

C.) D′(4, –1), E′(5, –3), and F′(1, –2)

D.) D′(1, –4), E′(3, –5), and F′(2, –1)