Madison Corp. incurred $450,000 of research and development costs to develop a product for which a patent was granted on January 2, 2013. Legal fees and other costs associated with registration of the patent totaled $20,000. On March 31, 2018, Madison paid $200,000 for legal fees in a successful defense of the patent. The total amount capitalized for the patent through March 31, 2018, should be

$470,000.

$650,000.

$670,000.

$220,000.