Which of the following statement is not correct with respect to the torsion test?

Which of the following statement is not correct with respect to the torsion test? Correct Answer ϵmax = ϵ1; ϵ2=ϵ3 = -ϵ1/2

The condition ϵmax=ϵ1; ϵ2=ϵ3 = -ϵ1/2 is valid for uniaxial tension test condition only. The remaining all three options are valid for torsion test.
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