Question \( \lim _{n \rightarrow \infty} \sum_{r=1}^{r=4 n} \frac{\sqrt{n}}{\sqrt{r}(3 \sqrt{r}+....

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Question
\( \mathrm{P} \)
\( \lim _{n \rightarrow \infty} \sum_{r=1}^{r=4 n} \frac{\sqrt{n}}{\sqrt{r}(3 \sqrt{r}+4 \sqrt{n})^{2}} \) is equal to
\( 1 \frac{1}{35} \)
\( 2 \frac{1}{14} \)
\( 3 \quad \frac{1}{10} \)
\( 4 \frac{1}{4} \)


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