Sam and His Friend Louie Agreed That Sam Would Lease

Sam and his friend Louie agreed that Sam would lease an apartment from Louie for three months in the summer.On the date the lease was to begin,Sam arrived at the apartment and discovered that Louie's friend,Sheila was already living there.Under these circumstances,the lease between Sam and Louie:

A) is unenforceable because it was a periodic tenancy.
B) is unenforceable because it created a tenancy at will.
C) is enforceable because Louie breached the covenant of quiet enjoyment.
D) is enforceable because Louie violated the implied warranty of possession.