Landlord and Tenant Entered into a Five-Year Lease

Multiple Choice

Landlord and tenant entered into a five-year lease.One year after the lease began,tenant assigned its rights under the lease to assignee.Two years after taking possession of the premises,assignee stopped paying rent to landlord.In order to recover rent due,landlord has a right to sue

A) tenant,but only if assignee is bankrupt.
B) tenant.
C) tenant,but only if at the time of the assignment,tenant agreed to be bound.
D) assignee.
E) assignee and tenant.