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The first three terms of the Taylor series about $x=0$ of $\sqrt { 4+x } $ are

A

$\cfrac { x }{ 4 } -\cfrac { { x }^{ 2 } }{ 64 } +\cfrac { 3{ x }^{ 3 } }{ 256 } $

B

$\cfrac { x }{ 4 } -\cfrac { { x }^{ 2 } }{ 64 } +\cfrac { 3{ x }^{ 3 } }{ 256 } $

C

$2+\cfrac { x }{ 4 } -\cfrac { { x }^{ 2 } }{ 8 } $

D

$2+\cfrac { x }{ 4 } -\cfrac { { x }^{ 2 } }{ 64 } $

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