What should come in place of the question mark (?) in the following question?
\(8\frac{1}{2} - \left[ {3\frac{1}{4} \div \left\{ {1\frac{1}{4} - \frac{1}{2}\left( {1\frac{1}{2} - \frac{1}{3} - \frac{1}{6}} \right)} \right\}} \right] = ?\)
1
\(4\frac{1}{2}\)
2
\(4\frac{1}{6}\)
3
\(9\frac{1}{2}\)
4
\(\frac{2}{9}\)
5
None of these