Lanny orally agrees to rent his house to Tenny for fifteen months, at a monthly rent of $1,000. Tenny moves in and pays the first month's rent. Lanny now wants to cancel the lease.

1. Suppose in Exercise 1 that Lanny himself is a tenant and has leased the house for six months. He subleases the house to Tenny for one year. The day before Tenny is to move into the house, he learns of Lanny's six-month lease and attempts to terminate his one- year lease. May he? Why?