If the sum of the first \( 2 n \) terms of the A.P. \( 2,5,8, \ldots \), is equal to the sum of ...

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If the sum of the first \( 2 n \) terms of the A.P. \( 2,5,8, \ldots \), is equal to the sum of the first \( n \) terms of A.P. \( 57,59,61, \ldots \), then \( n \) equals
(A) 10
(B) 12
(C) 11
(D) 13
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