Simplify (3x² - 2y² - 5xy)(2x² - 2xy - 2y² - 5x + 3y).

(a) 6x⁴ - 12x³y + 9x²y² - 2y⁴ + 25x²y - 15xy²
(b) 6x⁴ - 12x³y + 9x²y² + 2y⁴ - 25x²y + 15xy²
(c) 6x⁴ + 12x³y - 9x²y² - 2y⁴ - 25x²y + 15xy²
(d) 6x⁴ + 12x³y - 9x²y² + 2y⁴ + 25x²y - 15xy²

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