Timmy and June Owned a House in a Joint Tenancy

Timmy and June owned a house in a joint tenancy. Timmy died and in in his will, left his share of the property to his estranged wife Mavis. Mavis is insisting on moving into the property but June has objected to this. Which of the following statements most accurately describes the legal position?

A) Mavis is now a joint tenant of the property with June.
B) Mavis will not have an interest in the property until June dies.
C) Mavis cannot be legally excluded from the property as she is now a part owner of it.
D) Mavis has no ownership interest in the property.
E) Both A and C