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(C) Let \( S_{n} \) denote the sum of first \( n \) terms of an non constant A.P. and \( (\mathbf{R}) \quad 2 \) \( S_{2 n}=3 S_{n} \), then \( \frac{S_{3 n}}{2 S_{n}} \) is equal to
(D) If \( t_{1}, t_{2}, t_{3}, t_{4} \) and \( t_{5} \) are first 5 terms of an A.P., then (S) 3 \( \frac{4\left(t_{1}-t_{2}-t_{4}\right)+6 t_{3}+t_{5}}{3 t_{1}} \) is equal to
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