please help to solv this

(a) A copyright on the ninth edition of a textbook. New editions are issued every two years. (b) Goodwill generated from the purchase of the net assets of another compary. (c) Legal costs for defending a patent in court. The remaining legal life of the patent is 16 years: its remaining useful life is 5 years. (d) A patent for a new production process. The patent was received this year and has a remaining legal life of 14 years. It is expected that the product produced by the new process has a marketable life of four years