Ace Company purchased King Company at a cost that resulted in recognition of goodwill having an expected 10-year benefit period. However, Ace plans to make additional expenditures to maintain goodwill for a total of 20 years. What costs should be capitalized and over how many years should they be amortized?

Costs capitalized Amortization period

a. Acquisition costs only Not applicable

b. Acquisition costs only 10 years

c. Acquisition and maintenance costs 10 years

d. Acquisition and maintenance costs 20 years

(Please insert your explanation. Thank you!)