Mark the correct alternative in each of the following:
If in an A.P., \( S_{n}=n^{2} p \) and \(... VIDEO
Mark the correct alternative in each of the following:
If in an A.P., \( S_{n}=n^{2} p \) and \( S_{m}=m^{2} p \), where \( S_{r} \) denotes the sum of \( r \) terms of the A.P., then \( S_{p} \) is equal to
(A) \( \frac{1}{2} p^{3} \)
(B) \( m n p \)
(C) \( p^{3} \)
(D) \( (m+n) p^{2} \)
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