If $^8{C_r}{ = ^8}{C_{r + 2}}$, then the value of $^r{C_2}$ is
If $^8{C_r}{ = ^8}{C_{r + 2}}$, then the value of $^r{C_2}$ is
- A
$8$
- B
$3$
- C
$5$
- D
$2$
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