Which of the following ratios is the greatest?
$$\frac{3}{4}, \frac{1}{2}, \frac{7}{8}$$ and $$\frac{5}{6}$$

A

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

B

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

C

$$\frac{3}{4}$$

D

$$\frac{7}{8}$$