What is the value of $$\frac{\frac{1}{1} \div \frac{1}{2} \times \frac{1}{2} + \frac{1}{2} \times \frac{1}{2} \div \frac{1}{2}}{\frac{1}{4} \times \frac{1}{4} \div \frac{1}{2} + \frac{1}{4} \div \frac{1}{4} \times \frac{1}{2} - \frac{1}{4} \div \frac{1}{2} \times \frac{1}{2}}$$

A

8

B

2

C

4

D

1