Answer:
use the implicit rate of the lessor, assuming that the implicit rate is known to the lessee.
Step-by-step explanation:
Present value is the technique used in determining the today's worth of future value using a discounting factor.
In calculating the discounting factor to be used for computing the present value of lease payments, the lessee has the option of using whichever is lower between its incremental borrowing rate or the implicit rate of the lessor. The implicit rate of the lessor will be considered only if the lessee knows the the implicit rate of the lessor.
Based on this, the correct option from the question is to use the implicit rate of the lessor, assuming that the implicit rate is known to the lessee. This is if it is lower than its incremental borrowing rate.