Which series of transformations shows that triangle a is congruent to triangle b?

a. rotate triangle a 180° about the point (-1, -4), reflect it over the x-axis, and translate it 3 units to the left.

b. rotate triangle a 90° clockwise about (-1, -4), reflect it over the x-axis, and translate it 3 units to the left.

c. reflect triangle a over the y-axis, rotate it 180° clockwise about the origin, and translate it 3 units up.

d. reflect triangle a over the y-axis and translate it 2 units to the left and 8 units up.