If Sn denote the sum of n terms of an A.P. with first term a and common differen

Question

If Sn denote the sum of n terms of an A.P. with first term a and common difference d such that $$\frac{{{S_x}}}{{{S_{kx}}}}$$ is independent of x, then

Options:

A . d = a

B . d = 2a

C . a = 2d

D . d = -a

Answer: Option B

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