The Will Read, "To My Beloved Wife, I Leave Our

The will read, "To my beloved wife, I leave our matrimonial home for life, remainder to our son, Ivan." Ivan, the adult son, no longer lived in B.C. Upon her husband's death, his wife remarried and moved out of the matrimonial home, but she allowed her friend Tilly to live there. Upon learning that his mother had moved out, Ivan considered moving back to the home. Which one of the following is true?

A) If the wife sold her interest to Tilly, Tilly could stay in the home until she (Tilly) dies regardless of when the wife dies.
B) Ivan's legal right to return to the home does not arise until the death of his mother.
C) Ivan has the legal right to return to the home because, as the remainderman, he has a better right to live there than Tilly does.
D) Ivan has the legal right to return to the home because, as a blood relative, he has a better right to live there than Tilly does.
E) If the wife willed the home to her new husband, upon her death the new husband would inherit the home.