The expressi. on $$2 \div 2 of \frac{1}{2} + 2. 5 \times 2 \div 5 \times \frac{3}{5} of \frac{1}{3} - 0.5 \left(2.5-\frac{1}{2} \times 2 \div \frac{1}{2}\right)$$, on simplification, gives the result as:

A

0

B

6.75

C

1

D

$$\frac{2}{3}$$