Copyrights last: For the life of the author plus 70 years. O A. For 20 years from the date of registration. O B. Until the copyrighted information becomes available to the public. O C. For a 24 hour hold. OD. Trade secrets last: A. until the secret is no longer kept from the public. B. 20 years from the date the trade secret is first introduced into the market place. c. for the life of the inventor plus 70 years. O D. 20 years from registration