The arithmetic mean of \( { }^{n} C_{0},{ }^{n} C_{1},{ }^{n} C_{2} \ldots,{ }^{n} C_{n} \), is
...
The arithmetic mean of \( { }^{n} C_{0},{ }^{n} C_{1},{ }^{n} C_{2} \ldots,{ }^{n} C_{n} \), is
(A) \( \frac{2^{n}}{n} \)
(B) \( \frac{2^{n}-1}{n} \)
(C) \( \frac{2^{n}}{n+1} \)
(D) \( \frac{2^{n-1}}{n+1} \)
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