If the United States trustee appoints an individual under
section 586(b) of title 28 to serve as standing trustee in cases under this chapter and if such individual qualifies under
section 322 of this title, then such individual shall serve as trustee in the case. Otherwise, the United States trustee shall appoint one disinterested person to serve as trustee in the case or the United States trustee may serve as a trustee in the case.