$\"\"$

The expression is $\"\"$ .

$\"\"$ (Prime factorization of $\"\"$ ) $\"\"$ (Product property of square roots: $\"\"$ )

$\"\"$ (Substitute: $\"\"$ and $\"\"$ )

$\"\"$ (Product property of square roots: $\"\"$ )

$\"\"$ (Simplify)

$\"\"$ $\"\"$ .

Therefore, the simplified expression is $\"\"$ .

Option C is right choice. $\"\"$

$\"\"$ .

Option C is right choice.