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A18

B15

C12

D14

Answer:

$(3x-2y)^2(x^2+y^3)^2$

$(9x^2-12xy+4y^2)(x^4+2x^2y^3+y^6)$

coefficient of $x^4y^3$

$9x^2\times 2x^2y^3$

$18x^4y^3$

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