A and B can together complete a piece of work in 4 days. If A can alone can complete the same work in 12 days, in how many days can B alone complete that work?  Pick one.
A) 6
B) 5
C) 4
D) 3
E) 2
(6+B)'s 1 day work = 1/4   6's 1 day work = 1/12   B's 1 day work = 1/6   6NSWER 6
<result>A</result>
A and B can together complete a piece of work in 4 days. If A can alone can complete the same work in 12 days, in how many days can B alone complete that work?