Simplify the following expression.
$$2-\left[2\frac{1}{2} \times\left(-\frac{2}{3}\right)-5 \left\{\frac{1}{5} - \left(\frac{5}{3} - \frac{7}{10}\right)\right\}\right]$$

A

$$5\frac{1}{6}$$

B

$$4\frac{1}{6}$$

C

$$2\frac{1}{6}$$

D

$$-1\frac{1}{6}$$