Unless the power of attorney provides a different method for an agent's resignation, an agent may resign by giving notice to the principal and, if the principal is incapacitated:
(1) to the guardian, if one has been appointed for the principal, and a coagent or successor agent; or
(2) if there is no person described in Subsection (1), to:
(a) the principal's caregiver;
(b) another person reasonably believed by the agent to have sufficient interest in the principal's welfare; or
(c) a governmental agency having authority to protect the welfare of the principal.