Final answer:
It is true that companies must periodically review the estimated unguaranteed residual value in a sales-type lease to ensure the accuracy of their financial statements.
Step-by-step explanation:
Companies must periodically review the estimated unguaranteed residual value in a sales-type lease is true. When a company enters into a sales-type lease, it effectively acts as the financier, allowing the lessee to use a piece of property for a period of time in exchange for lease payments. In a sales-type lease, the lessor recognizes immediate profit on the leased asset, and part of the calculation of this profit includes the estimated residual value of the asset at the end of the lease term. Since this value is an estimate and may change due to various factors such as market conditions or wear and tear on the asset, it is important for the lessor to periodically review and adjust the estimation of the unguaranteed residual value to ensure the accuracy of their financial statements.