Bess creates a trust with income to Thelma or Thelma's estate for Bess's life, and a remainder to Wendy or Wendy's estate.What is the result for Bess when Bess predeceases all other parties in the following situations?

1.Bess, as trustee, retains a power to invade corpus for Cirus.

2.Bess, as trustee, retains a power to give the remainder to Cirus.

3.Bess names herself trustee and, as trustee Bess is required to give Cirus (who is no relation to Bess) as much income as is needed each year for Cirus' support and maintenance, with any excess income to go to Thelma.

4.Bess retains a power subject to Thelma's and Cirus' approval to require a third party trustee to return the trust corpus to Bess.