Directions: Study the following question and all the three statements given to decide whether any information provided in the statement(s) are/is redundant and can be dispensed with while answering the question.
In how many days can the work be completed by P, Q, R together?
I. P&Q together can complete the work in four days
II. Q&R together can complete the work in eight days.
III. P&R can complete the work in twelve days.