Triangle ABC and triangle CDE are similar right triangles. Which proportion can be used to show that the slope of AC is equal to the slope of CE?
A) 1 − (−1) −1 − 4 = 5 − (−1) 5 − 1
B) 1 − (−1) −1 − (−4) = 5 − 1 5 − (−1)
C) −1 − (−4) 1 − (−1) = 5 − 1 5 − (−1)
D) 1 − (−1) −1 − (−4) = 5 − (−1) 5 − 1