If the sum of first \( p \) terms, first \( q \) terms and first \( r \) terms of an A.P. be \( ...
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0If the sum of first \( p \) terms, first \( q \) terms and first \( r \) terms of an A.P. be \( x, y \) and \( z \) respectively. Then, \( \frac{x}{p}(q-r)+\frac{y}{q}(r-p)+\frac{z}{r}(p-q) \), is
(A) 2
(B) \( p q r \)
(C) \( \frac{8 x y z}{p q r} \)
(D) undefined
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