Under IFRS, in computing the present value of the minimum lease payments, the lessee should:

(a) use its incremental borrowing rate in all cases.

(b) use either its incremental borrowing rate or the implicit rate of the lessor, whichever is higher, assuming that the implicit rate is known to the lessee.

(c) use either its incremental borrowing rate or the implicit rate of the lessor, whichever is lower, assuming that the implicit rate is known to the lessee.

(d) use the implicit rate of the lessor, unless it is impracticable to determine the implicit rate.