What is the value of $$\left[\frac{1}{5} + \left\{\frac{1}{6} of \left(\frac{42}{35} \div \frac{6}{25}\right) - \left(\frac{2}{7} \times \frac{6}{5} \div \frac{18}{42}\right)\right\} + \frac{19}{30}\right]$$?

A

$$\frac{17}{15}$$

B

$$\frac{13}{15}$$

C

$$\frac{14}{15}$$

D

$$\frac{11}{15}$$