Answer:
a.balance sheet as a current liability
Explanation:
Unearned fee refers to money received from a customer for services not yet done, or for goods not delivered. It is a prepayment for work not yet done. Unearned fees are reported in the accrual accounting system. The economic activity that results in earning revenue has not been executed.
Unearned fees create an obligation for the business to honor. The business becomes indebted to the customer who has made a prepayment. An unearned fee is thus a debt and has to be recorded as a liability. In practice, the service or goods paid for in advance should be delivered within the same period. Therefore, the unearned fee is recorded as a current liability.