Multiply, and Then Simplify If Possible $\sqrt { 2 } ( \sqrt { 2 } + x \sqrt { 10 } )$

Multiple Choice

Multiply, and then simplify if possible. Assume all variables represent positive real numbers.
- $\sqrt { 2 } ( \sqrt { 2 } + x \sqrt { 10 } )$

A) $2 + x \sqrt { 5 }$
B) $4 + x \sqrt { 5 }$
C) $2 + 2 x \sqrt { 5 }$
D) $2 + 2 x \sqrt { 10 }$