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Find the rectangular coordinate of the polar coordinate point $\left( -5,\; \cfrac { 2\pi }{ 3 } \right)$

A

$\left( \cfrac { 5 }{ 2 } ,\cfrac { -5\sqrt { 3 } }{ 2 } \right)$

B

$\left( \cfrac { -5 }{ 2 } ,\cfrac { 5\sqrt { 3 } }{ 2 } \right)$

C

$\left( \cfrac { -5\sqrt { 3 } }{ 2 } ,\cfrac { 5 }{ 2 } \right)$

D

$\left( \cfrac { 5\sqrt { 3 } }{ 2 } ,\cfrac { -5 }{ 2 } \right)$

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