Triangle ABC is reflected across the x-axis. If the coordinates of the originals shape are A (-4, -1), B (-5, -2), and C (-10, -1), what are the coordinates of A', B', and C'

A' (4, -1), B' (5, -2), and C' (10, -1)
A' (-4, 1), B' (-5, 2), and C' (-10, 1)
A' (-4, 1), B' (5, -2), and C' (-10, 1)
A' (4, 1), B' (5, 2), and C' (10, 1)

The correct answer is A' (4, 1), B' (5, 2), and C' (10, 1).