A bag contains $5$ black balls, $4$ white balls and $3$ red balls. If a ball is selected randomwise, the probability that it is a black or red ball is
A bag contains $5$ black balls, $4$ white balls and $3$ red balls. If a ball is selected randomwise, 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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- [IIT 2012]