A alone can do $$\frac{2}{5}$$ of a work in 12 days. B is 25 percent more efficient than A. C alone can do the same work in 12 days less than B. D is 25 percent less efficient than C. If they all work together, then the work will be completed in how many days?

A. $$\frac{{300}}{{47}}$$

B. $$\frac{{240}}{{53}}$$

C. $$\frac{{180}}{{43}}$$

D. $$\frac{{200}}{{51}}$$

Answer: Option B