For the parametric equations x=t² +t, y=t² −t, find new parametric equations that shift its graph to the left 4 places and up 5.
a) x=(t+4)² +t, y=(t+4)² −(t+4)+5
b) x=(t−4)² +t, y=(t−4)² −(t−4)+5
c) x=(t+4)² −t, y=(t+4)² +(t+4)+5
d) x=(t−4)² −t, y=(t−4)² +(t−4)+5