Which of the following is the characteristic equation of the recurrence an=4an−1−5an−2+2an−3a_n = 4a_{n-1} - 5a_{n-2} + 2a_{n-3}an=4an−1−5an−2+2an−3?
r3−4r2+5r−2=0r^3 - 4r^2 + 5r - 2 = 0r3−4r2+5r−2=0
r3+4r2+5r+2=0r^3 + 4r^2 + 5r + 2 = 0r3+4r2+5r+2=0
r3−4r2−5r+2=0r^3 - 4r^2 - 5r + 2 = 0r3−4r2−5r+2=0
r3−4r2+5r+2=0r^3 - 4r^2 + 5r + 2 = 0r3−4r2+5r+2=0