A, B and C can do a piece of work individually in 8, 12 and 15 days respectively. A and B start working, but A quits after working for 2 days. After this, C joins B till the completion of work. In how many days will the work be completed ?

Options

A. `5 (8)/(9)` days
B. `4 (6)/(7)` days
C. `6 (7)/(13)` days
D. `3 (3)/(4)` days