The ratio of coefficient of $x^2$ to coefficient of $x^{10}$ in the expansion of ${\left( {{x^5} + {{4.3}^{ - {{\log }_{\sqrt 3 }}\sqrt {{x^3}} }}} \right)^{10}}$ is

  • A

    $4:7$

  • B

    $10:3$

  • C

    $3:10$

  • D

    $7:4$

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