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If three positive real numbers a,b,c, `(cgta)` are in H.P., then `log(a+c)+log(a-2b+c)` is equal to

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If three positive real numbers a,b,c, `(cgta)` are in H.P., then `log(a+c)+log(a-2b+c)` is equal to
A. 2 log (c-b)
B. 2 log (a+c)
C. 2 log (c-a)
D. log a+log b+log c
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Correct Answer - B
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