Property LAWplease help with this short answer question. Thx!

A couple who own their own residential property as joint tenants run into marital trouble and separate. The husband immediately changes his will so that, rather than everything passing to his estranged wife on his death, it now goes to his brother and sister in equal shares. He is killed in a traffic accident before any settlement is reached on the house. Referring to the AAMC Training Learning Guide and/or Conveyancing Act 1919 Division 4 Property Generally. Ignore any family law issues.

(a) Explain who is entitled to the husbands share of the house and why.

(b) Explain who would be entitled to his share if the couple had owned the house as tenants in common and why.