Determine a region whose area is equal to the given limit. Do not evaluate the limit.\\
$\lim_{n \to \infty} \sum_{i=1}^{n} \frac{2}{n} \sqrt{1 + \frac{2i}{n}}$
$\sqrt{1 + x}$ on $[0, 2]$
$2\sqrt{1 + x}$ on $[0, 2]$
$\sqrt{1 + x}$ on $[-2, 2]$
$2\sqrt{1 - x}$ on $[0, 2]$
$2\sqrt{1 + x}$ on $[-2, 2]$