What is the product of these polynomials? (3x2 - 2x)(2x2 + 3x - 1)
A. 6x4 + 5x3 - 9x2 - 2x B. 5x4 + 2x3 - 8x2 + 2x
C. 6x4 + 5x3 - 3x2 + 2x D. 6x4 + 5x3 - 9x2 + 2x