$A$ bag contains $5$ black balls, $4$ white balls, and $3$ red balls. If a ball is selected at random, the probability that it is a black or red ball is

  • A
    $\frac{1}{3}$
  • B
    $\frac{1}{4}$
  • C
    $\frac{5}{12}$
  • D
    $\frac{2}{3}$

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