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If `a_(1),a_(2),a_(3)` be any positive real numbers, then which of the following statement is not true.

A

`3a_1 a_2 a_3 lt= a_1^3+ a_2^3 + a_3^3 `

B

`a_3/a_2 + a_2/a_3 + a_3/a_1 gt= 3`

C

`a_1 a_2a_3( (1)/(a_1) + (1)/(a_2) + (1)/(a_3) ) gt= 9`

D

`a_1a_2a_3 ( (1)/(a_1) + (1)/(a_2) + (1)/(a_3) )^3 lt= 27`

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