Answer: Option A
Explanation: Assets having no physical existence are called intangible assets for example :- goodwill, patent rights.
Amortization can be defined as the method of distributing the value of intangible assets over its useful life, thus for amortization the asset must have a definite life.
While amortizing , first its recoverability is evaluated by comparing fair value with carrying value and after that the difference in both is calculated.