The value of $$32 \div 12 of 3 \times [5 - (15 - 12) \div 9] of \frac{3}{7} + 4 - 8 \div 2 of 4$$ is:

A

$$3\frac{1}{3}$$

B

$$4\frac{7}{9}$$

C

$$3\frac{1}{6}$$

D

$$1\frac{7}{9}$$