A committee of five is to be chosen from a group of $9$ people. The probability that a certain married couple will either serve together or not at all, is
A committee of five is to be chosen from a group of $9$ people. The probability that a certain married couple will either serve together or not at all, is
- A
$\frac{1}{2}$
- B
$\frac{5}{9}$
- C
$\frac{4}{9}$
- D
$\frac{2}{9}$
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