The characteristics of a spendthrift trust include which of the following?

A) Spendthrift provisions are not valid in most states.
B) Trust creditors can never seize income from a spendthrift trust.
C) A settlor may provide, in a spendthrift trust, that the beneficiary cannot, by assignment or otherwise, impair her rights to receive principal or income.
D) All of these.

Spendthrift trusts are designed to protect the trust's assets from being claimed by creditors of the beneficiaries and to prevent beneficiaries from squandering their inheritance. A key characteristic of a spendthrift trust is that it contains provisions preventing the beneficiary from transferring (by assignment or otherwise) their rights to future payments of income or principal, thereby protecting the trust's assets from creditors and ensuring the beneficiary's inability to prematurely access or misuse their inheritance.