Consider a parabola P that is congruent to y=x^2, opens upward,and has its vertex at (2,-4). Now find the equation of a new parabola that results if P is:
A. stretched vertically by a factor of 5.
B. compressed by a factor of 2.
C. translated 2 units to the left.
D. translated 3 units up.
E. reflected about the x-axis and translated 2 units to the right and 4 units down.