Simplify $$\left[3\frac{1}{4} \div \left\{1\frac{1}{4} - \frac{1}{2} \left(2\frac{1}{2} -\overline{\frac{1}{4} - \frac{1}{6}}\right)\right\}\right] \div \left( \frac{1}{5} of 4 \frac{1}{3}\right) -2 \times 3 \div 6 of \frac{1}{3}$$

A

90

B

87

C

84

D

36