If the sum of the first \( n \) terms of a series be \( 5 n^{2}+2 n \), then its second term is ...

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If the sum of the first \( n \) terms of a series be \( 5 n^{2}+2 n \), then its second term is
(A) \( \frac{56}{15} \)
(B) \( \frac{27}{14} \)
(C) 17
(D) 16
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