The commission or Office of Regulatory Staff may require the production within this State at such time and place as it may designate of any books, accounts, papers, or records of the telephone utility relating to its business or affairs within the State, pertinent to any lawful inquiry and kept by the telephone utility in any office or place within or without this State or, at its option, verified copies in lieu thereof, so that an examination thereof may be made by the Office of Regulatory Staff or under its direction.