If $$x = 5 + 2\sqrt 6 {\text{,}}$$then $$\sqrt x- \frac{1}{{\sqrt x }}$$= is?

If $$x = 5 + 2\sqrt 6 {\text{,}}$$then $$\sqrt x- \frac{1}{{\sqrt x }}

1.	If $$x = 5 + 2\sqrt 6 {\text{,}}$$then $$\sqrt x- \frac{1}{{\sqrt x }}$$= is?
A.	${\text{2}}\sqrt 2 $$
B.	${\text{2}}\sqrt 3 $$
C.	$\sqrt 3+ \sqrt 2 $$
D.	$\sqrt 3- \sqrt 2 $$
Answer» B. ${\text{2}}\sqrt 3 $$