Write the Expression as a Single Term, Factored Completely $$5 \sqrt { 4 x ^ { 2 } + 1 } + \frac { 20 x } { \sqrt { 4 x ^ { 2 } + 1 } }$$

Multiple Choice

Write the expression as a single term, factored completely. Do not rationalize the denominator.
- $$5 \sqrt { 4 x ^ { 2 } + 1 } + \frac { 20 x } { \sqrt { 4 x ^ { 2 } + 1 } }$$

A) $\frac { 5 \left( 4 x ^ { 2 } + 4 x + 1 \right) } { \sqrt { 4 x ^ { 2 } + 1 } }$
B) $\frac { 20 x ^ { 2 } + 20 x + 1 } { 5 x + 1 }$
C) $\frac { 20 x ^ { 2 } + 20 x + 1 } { \sqrt { 4 x ^ { 2 } + 1 } }$
D) $\frac { 5 \left( 4 x ^ { 2 } + 4 x + 1 \right) } { 5 x + 1 }$