If $$a = \frac{{\sqrt 3 }}{2}{\text{,}}$$then $$\sqrt {1 + a}+ \sqrt {1 - a}= ?$$

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

$\left( {2 + \sqrt 3 } \right)$$

$\left( {\frac{{\sqrt 3 }}{2}} \right)$$

If $$a = \frac{{\sqrt 3 }}{2}{\text{,}}$$then $$\sqrt {1 + a}+ \sqrt {

1.	If $$a = \frac{{\sqrt 3 }}{2}{\text{,}}$$then $$\sqrt {1 + a}+ \sqrt {1 - a}= ?$$
A.	$\left( {2 - \sqrt 3 } \right)$$
B.	$\left( {2 + \sqrt 3 } \right)$$
C.	$\left( {\frac{{\sqrt 3 }}{2}} \right)$$
D.	$\sqrt 3 $$
Answer» E.