The young Wang is a newcomer who has just arrived at a department. The director encouraged him to say, "All the young people in our unit have made great progress in their careers. " The deputy director warned him: "We Some young people in the unit have not made great progress in their careers! "The section chief welcomed Xiao Wang and introduced:" All the young people in our department are hardworking and dedicated. "Xiao Li, a fellow from the same department, told Xiao Wang: "Our chief is very hard-working but not very honest. " After working for a while, Xiao Wang found that only one of the above four words was false. Based on this, it can be inferred that in Xiaowang's unit? ['Some young people are hardworking and dedicated.', 'All young people are hardworking and dedicated.', 'Chief is not hard-working but honest.', 'The section chief is hardworking, dedicated and honest.']