A alone can do a work in 14 days. B alone can do the same work in 28 days. C alone can do the same work in 56 days. They start the work together and completed the work such that B was not working on last 2 days and A did not work in last 3 days. In how many days (total) was the work completed?

A

$$\frac{65}{7}$$ days

B

$$\frac{72}{7}$$ days

C

$$\frac{82}{7}$$ days

D

$$\frac{79}{7}$$ days