A alone can do a work in 11 days. B alone can do the same work in 22 days. C alone can do the same work in 33 days.
They work in the following manner:
Day 1 : A and B work.
Day 2: B and C work.
Day 3: C and A work.
Day 4: A and B work. And so on.
In how many days will the work be completed?

A

6 days

B

3 days

C

9 days

D

12 days