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Which of the following is equivalent to $ { \left( { x }^{ 2 }{ y }^{ 6 } \right) }^{ \frac { 1 }{ 2 } } $?

$ { (xy) }^{ 6 } $

$ { \left( xy \right) }^{ 3 } $

$ { x }^{ \frac { 1 }{ 4 } }{ y }^{ \frac { 1 }{ 12 } } $

$ { xy }^{ 3 } $