The least among the fractions $$\frac{{15}}{{16}}$$ , $$\frac{{19}}{{20}}$$ , $$\frac{{24}}{{25}}$$ , $$\frac{{34}}{{35}}$$ is :

• A. $\frac{{34}}{{35}}$$
• B. $\frac{{15}}{{16}}$$
• C. $\frac{{19}}{{20}}$$
• D. $\frac{{24}}{{25}}$$