On 1/1/2018 Bush Co enters a four-year lease of building which has a remaining useful life of ten years. Lease payments are $50,000 per annum, payable in arrears from December 31, 2018. Bush Co incurs initial direct costs of $20,000 and receives lease incentives of $5,000. There is no transfer of the asset at the end of the lease and no purchases option. The interest rate implicit in the lease is not immediately determinable but Bush Cos incremental borrowing rate is 5%. Is it a lease for Bush Co under IFRS 16 Leases? Give explanation.