यदि $x^3+y^3=3axy$ है,तो $\left(\frac{3a}{2}, \frac{3a}{2}\right)$ पर $3ay^{\prime \prime}+40$ का मान है

  • A
    $-5$
  • B
    $0$
  • C
    $8$
  • D
    $1$

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