A can have a piece of work done in 8 days, B can work three times faster than the A, C can work five times faster than A. How many days will they take to do the work together

A can have a piece of work done in 8 days, B can work three times fast

1.	A can have a piece of work done in 8 days, B can work three times faster than the A, C can work five times faster than A. How many days will they take to do the work together
A.	3 days
B.	8/9 days
C.	4 days
D.	None of the above
Answer» C. 4 days