Points R and S 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 R is 1 unit to the left and 3.5 units down. From the origin, point S is 1 unit to the left and 3.5 units up.

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

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