On a coordinate grid, point p is at (7, 2) and point r is at (−3, −6). points q and s are a reflection of both points across the x-axis. what are the coordinates of q and s? a. q(−7, 2), s(3, −6) b. q(−7, −2), s(3, 6) c. q(−7, 2), s(−3, 6) d. q(7, −2), s(−3, 6)