$A$ box contains $4$ defective and $6$ good machines. Two machines are selected at random without replacement. Find the probability that both the machines are good.

  • A
    $\frac{1}{2}$
  • B
    $\frac{1}{3}$
  • C
    $\frac{1}{4}$
  • D
    $\frac{1}{5}$

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