Itzhak and Eleni Are Joint Tenants of a Piece of Land

Itzhak and Eleni are joint tenants of a piece of land called Blackacre.Which of the following statements is TRUE?

A) If Itzhak and Eleni grant a lease to Damian, then he will join them in a joint tenancy.
B) Although their shares are undivided, Itzhak may own a 60 percent interest in the joint tenancy.
C) If Eleni sells half of her interest to Eduardo, then there will be a joint tenancy between Eleni and Eduardo, but a tenancy in common between Eduardo, Eleni, and Itzhak.
D) If Itzhak dies and his widow inherits his interest in Blackacre, then Eleni and the widow will own the property as joint tenants.
E) If Itzhak sells his interest to Rosie, Rosie and Eleni will be co-tenants of Blackacre.