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A18

B15

C12

D14

Answer:

A. 18

Read Explanation:

(3x2y)2(x2+y3)2(3x-2y)^2(x^2+y^3)^2

(9x212xy+4y2)(x4+2x2y3+y6)(9x^2-12xy+4y^2)(x^4+2x^2y^3+y^6)

coefficient of x4y3x^4y^3

9x2×2x2y39x^2\times 2x^2y^3

18x4y318x^4y^3


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