The set of all values of lamda for which...

The set of all values of `lamda` for which the system of linear equations: `2x_1-2x_2+x_3=lamdax_1, 2x_1-3x_2+2x_3=lamdax_2, -x_1+2x_2=lamdax_3` has no trivial solution, (A) contains more than two elements (B) is in empty set (C) is a singleton (D) contains two elements

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