Design Inc. is an independent hardware development firm that builds computer chips that enable quick retrieval of the best information relating to the type of information the user selects as of highest importance. Design Inc. recently earned a patent on its Gen Z product and needs help on the most appropriate way to handle the development costs relating to the patent. Select the most appropriate method from the following list of options:

a. The costs of the patent are capitalized and amortized over the shorter of its legal life of 20 years or estimated useful life.

b. The costs are capitalized and amortized over the shorter of its legal life of 50 years or the estimated useful life.

c. The costs of exploratory research and development leading to the new patent are expensed when incurred; none of the costs relating to development of the patent can be capitalized.

d. The costs relating to development of the patent can be capitalized but are not subject to amortization.