The reciprocal of the value of \(3\frac{1}{2} - \left[ {1 - \frac{3}{4} + \left\{ {2\frac{1}{2} - \left( {1\frac{1}{2} - \frac{1}{3}} \right)} \right\}} \right]\)is

• A. 12/23
• B. 1
• C. 0
• D. 2