The sum of the first three terms of a G.P. is S and their product is 27. Then all such S lie in :

Question

[-3, $\infty $)

(-$ \propto $, 9]

(-$ \propto $, -9] $ \cup $ [-3, $\infty $)

(-$ \propto $, -3] $ \cup $ [9, $\infty $)

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