(b) The court may remove a trustee if the court finds by a preponderance of the evidence that:
- (1) The trustee has committed a serious breach of trust;
- (2) Lack of cooperation among cotrustees substantially impairs the administration of the trust;
- (3) Because of unfitness, unwillingness or persistent failure of the trustee to administer the trust effectively, removal of the trustee best serves the interests of the beneficiaries; or
- (4) There has been a substantial change of circumstances or removal is requested by all of the qualified beneficiaries, removal of the trustee best serves the interests of all of the beneficiaries, removal is not inconsistent with a material purpose of the trust, and a suitable cotrustee or successor trustee is available.