Job-sharing is a system whereby two or more people share one job, each individual working a certain proportion of the overall working week. Job-sharing arrangements are available in about 20% of companies, but mostly on an informal basis. Interestingly, participation is greatest amongst administrative staff and is often associated with either easing child care responsibilities or helping staff to look after elderly relatives.

Question: Job-sharing is most prevalent among administrative staff.
Options:
A. true, B. false, C. uncertain
Answer: "A"