ANSWER
D.
EXPLANATION
We perform the synthetic division to get:
-2 15 -22 -15
3| -6 27 15
-2 9 5 0
From the synthetic division problem;
The coefficient of the quotient are the first three numbers.
-2, 9, 5
The last number 0 is the remainder
Since the coefficient of the quotient are three, it means the polynomial having 2 as the highest degree.
Therefore the quotient is: