If a variable takes values \( 0,1,2, \ldots \ldots, n \) with frequencies \( q^{n},(n) q^{n-1} p...

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If a variable takes values \( 0,1,2, \ldots \ldots, n \) with frequencies \( q^{n},(n) q^{n-1} p \), \( \frac{n(n-1)}{1.2} q^{n-2} p^{2}, \ldots . p^{n} \). Where \( p+q=1 \), then the mean is
(A) \( n q \)
(B) \( n p \)
(C) \( n(p+q) \)
(D) none of these
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