Take 2y2 - 3y - 5 from y3 - 6y2 + 5y. Select the correct answer.
a. y3 - 2y2 + 3y + 5
b. y3 - 4y2 + 2y - 5
c. y3 - 4y2 + 2y + 5
d. y3 - 8y2 + 8y + 5