The weighted mean of first \( n \) natural numbers whose weights are equal is given by (A) \( (2...

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The weighted mean of first \( n \) natural numbers whose weights are equal is given by
(A) \( (2 n+1) / 2 \)
(B) \( (n+1) / 2 \)
(C) \( (\mathrm{n}-1) / 2 \)
(D) \( (2 \mathrm{n}-1) / \mathrm{n} \)
\( \mathrm{P} \)
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