What will come in place of question mark ‘?’ in the following questions?
\(5\frac{1}{4} \div \left\{{4\frac{3}{4} - 1\frac{1}{2}\;\left({2\frac{1}{2} - \frac{1}{4} - \frac{1}{6}} \right)} \right\} = \:?\)1
\(\frac{{21}}{{13}}\)
2
\(\frac{{42}}{{13}}\)
3
\(\frac{{12}}{{21}}\)
4
\(\frac{{42}}{{26}}\)
5
None of these