Which shows one way to determine the factors of x³ + 4x² + 5x + 20 by grouping?
O x(x² + 4) + 5(x² + 4)
O x²(x + 4) + 5(x + 4)
O x²(x + 5) + 4(x + 5)
Ox(x² + 5) + 4x(x² + 5)