A tenant entered into a written five-year lease to rent an office from a landlord for $6,000 per year beginning October 1. The lease required that rent in the amount of $500 be paid on or before the first of each month. Two months before the five-year term was up, the tenant received a new lease identical to the one he had already signed, except that the lease term began on the upcoming October 1 and the stated amount of rent per month was $600. The tenant returned the lease to the landlord unsigned, with a letter stating that he did not intend to renew the lease and would be moving out on September 30. The tenant did not move out on September 30. On October 1, the landlord received a check for $500 from the tenant. The notation on the check indicated that it was for the October rent. The landlord deposited the check in her account. She then sent a letter to the tenant stating that he was $100 in arrears in his rent. The tenant did not move out of the office during October, and the landlord did nothing to remove him. Most courts would hold that the tenant has what type of tenancy