The quotient of (x5 – 3x3 – 3x2 – 10x + 15) and a polynomial is (x2 – 5)

The quotient of (x5 – 3x3 – 3x2 – 10x + 15) and a polynomial is (x2 – 5). What is the polynomial?

a. x5 – 3x3 – 2x2 – 10x + 10
b. x7 – 8x5 – 3x4 + 5x3 + 30x2 + 50x – 75
c. x3 + 2x – 3
d. x5 – 3x3 – 4x2 – 10x + 20