Murray is working with his clients, Josh and Mandy, to help them implement a new estate plan developed by an estate planning attorney. If Murray were to perform the following tasks, which actions would constitute the unauthorized practice of law?

	a.	Funding the couples revocable trust.
	b.	Calculating each spouses estate tax liability.
	c.	Changing the deed of the couples home to a tenancy in common.
	d.	Adding a codicil to a will.