If a, b, c are in G.P and log a - log 2b...

If a, b, c are in G.P and `log a - log 2b, log 2b- log 3c, log 3c- log a` are in A.P., then a, b, c are the lengths of the sides of a triangle which is

A

acute angled

B

obtuse angled

C

right angled

D

equilateral

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