If the vertices of triangle qrs have coordinates q(1, −2), r(3, −2), and s(2, −4), which coordinates are the coordinates of the vertices of triangle qꞌrꞌsꞌ when triangle qrs is reflected across the x-axis?
a. qꞌ(−1, −2), rꞌ(−3, −2), sꞌ(−2, −4)
b. qꞌ(1, 2), rꞌ(3, 2), sꞌ(2, 4)
c. qꞌ(2, 1), rꞌ(2, 3), sꞌ(4, 2)
d. qꞌ(2, −4), rꞌ(6, −4), sꞌ(4, −8)