The term independent of $x$ in the expansion of ${\left( {\sqrt {\frac{x}{3}} + \frac{3}{{2{x^2}}}} \right)^{10}}$ will be

  • [IIT 1965]
  • A

    $3\over2$

  • B

    $5\over4$

  • C

    $5\over2$

  • D

    None of these

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