A set of 10 new questions in each round Question: ( 2 of 10 ) Barbara can finish a work in 12 days. Susan can finish the same work in 13 days while Jessica can finish the work in 14 days. How long will it take to finish it if they work together? (A) 4 80/253 days or 4.316 days (B) 13 days (C) 9.75 days (D) 8 80/253 days or 8.316 days