Points M and N on the coordinate grid below show the positions of two midfield players of a soccer team: Coordinate grid shown from negative 4 to positive 4 on x-axis and negative 4 to positive 4 on y-axis. From the origin, point M is 2 units to the left and 2.5 units down. From the origin, point N is 2 units to the right and 2.5 units down.

Which statement best describes the relationship between the positions of the two midfield players?

N is M reflected across the x-axis; only the signs of the x-coordinates of M and N are different.
N is M reflected across the x-axis; only the signs of the y-coordinates of M and N are different.
N is M reflected across the y-axis; only the signs of the x-coordinates of M and N are different.
N is M reflected across the y-axis; only the signs of the y-coordinates of M and N are different.