જો $\frac{5+2 \sqrt{3}}{7+4 \sqrt{3}}=a+b \sqrt{3}$ હોય,તો

  • A
    $a=-11, b=-6$
  • B
    $a=-11, b=6$
  • C
    $a=11, b=-6$
  • D
    $a=6, b=11$

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